Screws refer to a tool that gradually tightens a part using the mathematical and physical principles of the beveled circular rotation and friction of an object. Screws are a common fastener that is widely used in daily life and production. The general material is plastic or metal, and the grooves engraved on the surface are called threads, which are cylindrical.
Screws are ubiquitous in industrial production and daily life. Therefore, screws are also known as the rice of industry. The application scope of screws includes electronic products, mechanical products, digital products, power equipment, and electromechanical mechanical products. Screws are also widely used in vehicles, ships, chemical experiments, hydraulic engineering, and so on.
Dongguan KENENG International Trading Co., Ltd is a professional screws manufacturer and trading integrating company, specializing in the design, production, and sales of various carbon steel, stainless steel, copper parts, titanium alloy products such as British and American standard Cup heads, hexagon bolts, self-tapping screws, drilling screws, drywall screws, stud bolts, U-bolts, anchor bolts, welding screws, eye bolts, SEM screws, set screws, carriage screws, nuts, gaskets, electronic small screws, pin shafts, springs, car parts, high-grade building expansion bolts, etc. It is widely used in machinery, mold, automobile, motorcycle, aerospace, agricultural machinery, electronics, construction, household appliance, and other fields. We have a large number of quantities of standard Metric and Inch screws in stock. For a long time, we have been serving new and old customers with the concept of honesty, pragmatism, innovation, and win-win, and have a good reputation in the hardware industry.
A custom fastener is needed when engineering specifications require a fastener to function in an application that is not an industry standard. KENENG is also a custom screw manufacturer. Customized fasteners are available for special lengths, and tolerances regarding length or body diameters. Or due to certain strength requirements or corrosion situation requirements, these special cases may require special materials. In many of these situations, the customer’s engineering department will provide a CAD drawing showing all aspects of the fastener required for the company’s production.
KENENG can produce both standard and non-standard screws, we have a professional R & D team to produce all kinds of non-standard screws according to customers’ requirements. We are able to produce electronic precision screws, extra-long screws, step screws, shoulder screws, color screw, self drilling screw, wood screw, machine screw, drywall screw, brass screw, and self tapping screw, as well as other kinds of special-shaped screws.
KENENG is a professional screw manufacturer with more than 20 years of experience, which can provide customized services, any quote is warmly welcomed.
Fasteners are a kind of mechanical parts which are widely used for fastening connections. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, construction, machinery, chemical industry, metallurgy, mold, hydraulic, and so on. In all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instrument, and apparatus, you can see all kinds of fasteners, which is the most widely used mechanical components. It is characterized by a wide variety of specifications, performance, and use of different, and standardization, serialization, and universalization of the degree are also extremely high.
KENENG is a fasteners manufacturer with more than 10 years of manufacturing experience. Our factory covers an area of 20000 square meters, our company has IS0 9001 quality management system certification and ROHS, REACH certification, which is a set of product research and development, production and manufacturing, sales, and service in one of the professional production of stainless steel fasteners and high strength fastener metal products enterprise. As one of a fastener supply companies, we have advanced multi-station upsetting equipment for fasteners and cutting machine tools for various special-shaped fasteners. The annual sales volume of various fasteners reaches 100,000 tons. The company has been listed as a high-quality fasteners supplier by customers many times.
Materials can be customized according to the needs of copper, iron, aluminum, and stainless steel, surface treatment can be done according to customer requirements white zinc, black zinc, yellow zinc, nickel, chromium, black, electrophoresis, Dacromet, gold, silver, copper and so on. We are also a very popular titanium fasteners supplier and stainless steel fasteners manufacturer.
1. How is the fastener made?
Fasteners production process can be basically divided into 7 steps, respectively for annealing, pickling, wire drawing, molding, grinding teeth, heat treatment and surface treatment.
Widely Application Industries
Depending on the fastener application, we are also an automotive fastener supplier, aircraft fasteners supplier, aerospace fasteners manufacturer, and so on.
This car key battery holder can hold one CR2032 battery. The battery can output 3.0V voltage and this holder can be used as power supply for computer main board, remote control for car key, electronic dictionary, calculator, smart lock, etc. Keyu brand CR2032 battery holder is made of high-quality materials, combined with advanced production equipment and strict quality control, for you to produce 100% good products.
CR2032 battery holder with copper sheet
The calculator battery holder can keep your batteries organized and protected. It is designed with copper sheet for easy to connect. This Calculator battery holder with copper sheet is perfect for the devices need a 3V external battery.
3V cell battery holder
This 3V cell battery holder can hold one CR2032 battery. The battery can output 3.0V voltage and this holder can be used as power supply for computer main board, remote control for car key, electronic dictionary, calculator, smart lock, etc. Keyu brand CR2032 battery holder is made of high quality materials, combined with advanced production equipment and strict quality control, for you to produce 100% good products.
Battery Type: Round plastic battery holder
Place of Origin: Dongguan, China
Color: Black
Material: PA66+GF V0 Resin
Product name: CR2032 battery holder
Style: Holder(open)
Mounting Type: Custom
Operating Temperature: -10-100℃
Size: 26.6*23.2*8.8mm
Termination Style: copper sheet
Nominal Voltage: 3.0V
This Car key battery holder can be made to 3.0v battery output
The opposite side is the same as the picture shown.
The perfect external power source for electronic DIY.
Holds 1 CR2032 battery.
Easy install, convenient to use.
High-quality plastic material.
The perfect external power source for computer main board, remote control for car key, electronic dictionary, calculator, smart lock, etc.
This i battery holder snap can be connect to one 9V battery. The battery can output 9.0V voltage and this holder can be used as power supply for measuring meters, wireless walkie-walkie, wireless microphone, radio etc. Keyu brand i battery holder snap is made of high quality materials, combined with advanced production equipment and strict quality control, for you to produce 100% good products.
T battery holder snap
This T battery holder snap can be connected to one 9V battery. The battery can output 9.0V voltage and this holder can be used as power supply for measuring meters, wireless walkie-walkie, wireless microphone, radio etc. Keyu brand T battery holder snap is made of high quality materials, combined with advanced production equipment and strict quality control, for you to produce 100% good products.
Battery Type: Rectangular plastic battery holder
Place of Origin: Dongguan, China
Color: Black
Material: ABS Resin
Product name: Battery holder snap
Style: Holder(open)
Mounting Type: Custom
Operating Temperature: -10-100℃
Size: 24.1*12.5*7.3mm Length of wire=150mm
Termination Style: Wire
Nominal Voltage: 9.0V
Product Feature And Application
This i battery holder snapcan be made to 9.0v battery output
2. The opposite side is the same as the picture shown.
3. The perfect external power source for electronic DIY.
4. Holds one 9V battery.
5. Easy install, convenient to use.
6. High-quality plastic material.
7. The perfect external power source for computer main board, remote control for car key, electronic dictionary, calculator, etc.
The plate magnet is a very common product in magnetic components. It can be seen in various life and production scenarios. It is mainly used in electroacoustics, permanent magnet motors, communications, automotive electronics, magnetic machinery, aerospace, computers, home appliances, medical devices, office automation, toys, packaging boxes, leather products, magnetic jewelry, and other fields.
Neodymium magnets are also called NdFeB magnets, which are tetragonal crystals composed of neodymium, iron, and boron (Nd2Fe14B). In 1982, Sumitomo Sasakawa, a special metal, discovered neodymium magnets. The magnetic energy product (BHmax) of this magnet was larger than that of a samarium cobalt magnet, and it was the largest material in the world at that time. Later, Sumitomo successfully developed the powder metallurgy process for special metals, and General Motors successfully developed the melt spinning process to prepare Nd-Fe-B magnets. This kind of magnet is the permanent magnet whose magnetism is second only to the absolute zero holmium magnet, and it is also the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products, such as earphones, mobile phones, battery-powered tools, and so on.
KENENG neodymium plate magnets could be customized in different sizes, offering a superior pull performance to other materials with the same volume, thanks to their NdFeB properties. We can manufacture a wide variety of super-strong neodymium magnets.
Neodymium magnet, also known as NdFeB magnet, is a tetetic crystal system made of Neodymium, iron and boron (Nd2Fe14B). In 1982, Sumitomo Special Metals’ Misaki Sagawa discovered neodymium magnets. The magnetic energy product (BHmax) of this magnet was greater than that of a samarium cobalt magnet, making it the largest material in the world at the time. Later, Sumitomo Special Metals successfully developed the powder metallurgy process and general motors successfully developed a melt-spinning process to make Ndfeb magnets. The magnet is now the second most magnetic permanent holmium zero magnets and the most commonly used rare earth magnet. Ndfeb magnets are widely used in electronic products, such as mobile phones, hard disks, earphones and battery-powered tools.
Rod magnets are made from high power magnets and stainless tubes by well welding and polishing, zero leakage and waterproof. After 4 times of polishing processes, the roughness can meet Ra0.6, widely used in food and pharma- ceuticals industry.
KENENG is a professional neodymium magnet rod manufacturer. We can manufacturer neodymium magnet, single-sided magnet, rubber magnet, ferrite black magnet, circular strong magnet, ring strong magnet, countersunk strong magnet, etc., and has a complete and scientific quality management system. KENENG has always been recognized by the industry for its integrity, strength, and high product quality.
Block magnet is very popular for its cost-effective. The permanent magnet material based on the intermetallic compound Nd2Fe14B make it has good mechanical properties. At the same time, the chemical composition in the production process is adjusted and the surface coating treatment method is adopted to make it more applicable.
Samarium cobalt magnets have a high magnetic energy product and extremely low-temperature coefficient. The maximum working temperature can reach 350 °C. When the working temperature is above 180 °C, its maximum magnetic energy product (BHmax), coercivity and Both temperature stability & chemical stability exceed NdFeB permanent magnet materials.
We are an experienced samarium cobalt magnet manufacturer. KENENG has 15 years of experience in designing, manufacturing, painting, and exporting magnets all over the world. We have won a good reputation in the industry with excellent and stable quality, prompt delivery, and quick response.
We specialize in the production of NdFeB strong magnets, single-sided magnets, rubber magnets, ferrite black magnets, ring strong magnets, round strong magnets, square strong magnets, bar strong magnets, special-shaped strong magnets, trapezoidal strong magnets, etc. KENENG has a complete and scientific quality management system. Our company has been recognized by the industry for its integrity, strength, and product quality.
We have MSDS/ROHS/REACH/ISO 9001 certificate. We are an excellent smco magnet manufacturer.
Custom Smco Magnet
KENENG is a samarium cobalt magnet supplier. We support customized Smco magnets according to customers’ drawings & requirements. Including :
Grade: SmCo5/Sm2Co17
Size: According to customers’ requirement
Shape: Disc/Block/Arc/Ring/Other Customized Shape, drilling can be available
Coating: Some applications require coating such as Ni-Cu-Ni and Zn(Cr3+).
Customized Packaging
Aluminum-nickel-cobalt (AlNiCo) is the earliest developed permanent magnet material, which is an alloy composed of aluminum, nickel, cobalt, iron and other trace metal elements. AlNiCo permanent magnet materials were successfully developed in the 1930s. At that time, it had the best magnetic properties and small temperature coefficient, so it was most widely used in permanent magnet motors. After the 1960s, with the successive advent of ferrite permanent magnets and rare earth permanent magnets, the application of AlNiCo permanent magnets in motors was gradually replaced, and the proportion showed a downward trend.
AlNiCo has high coercivity and Curie temperature. Aluminum nickel-cobalt alloy is hard and brittle, and cannot be cold worked. It must be made by casting or sintering process. Alnico alloy can generate magnetic fields up to 0.15 Tesla.
Dongguan KENENG International Trading Co., Ltd is located in the rare earth raw material processing center of China. The company has 15 years of experience in AlNiCo magnets design, manufacturing, coating and export to all over the world, we have won a good reputation in this industry for our excellent and stable quality, prompt delivery and fast response.
AlNiCo magnet is an alloy made of aluminum, nickel, cobalt, copper, iron, and other materials. According to the different processing technology, it is divided into two types: cast AlNiCo and sintered AlNiCo. Widely used in aerospace and military internal magnetic voltage and ammeters, electronic energy meters, multimeters, flow meters, etc.; various magnetic sensors, polarization relays, temperature, and pressure controllers; mobile phone buzzers, hearing aids, receivers, micro speakers; Car ignition starter, car, and motorcycle odometer, etc.
KENENG is a custom AlNiCo magnet manufacturer, for your exact specifications using our manufacturing facilities and experienced team of engineers. Just let us know what you are looking for by sending us a request for a quote or contact us today, and we’ll work with you to determine the most economical solution for your project.
The magnetic powder brake is magnetic, ensuring the working operation stability. It has always been used to adjust the stop and loading of the drive speed stop in industrial applications and can control torque tension without other equipment. The power magnetic powder brake will not cause equipment wear loss.
What Is The Magnetic Powder Brake
The magnetic powder brake, also known as magnetic particle brake, is based on the electromagnetic principle, transmitting torque by magnetic particle, which means that the brake operation can be managed and adjusted, to achieve excellent power transmission, no friction and no wear. It has the advantages of fast response speed, simple structure, no pollution, no noise, no impact vibration, energy-saving, etc. It has been widely used in papermaking, printing, plastic, rubber, textile, metallurgy, and other unwinding and winding tension control in coil industries.
Working Characteristics Of The Magnetic Powder Brake
The torque is increased. Even if the drive end and the driven end are not fully connected, the torque will rise to the set torque set by the current setting, and then accelerate at a certain torque. This function will greatly match the thermal capacity of the clutch, suitable for buffering start. If the starting current is controlled, the starting torque will also change rapidly. At the same time, due to use of the magnetic powder with advantages of heat-resistant and wear-resistant, the permissible connection power is large, and continuous slip can be used in the allowable continuous slip power range.
Winding And Unwinding Principle Of The Magnetic Powder Brake
Unwinding
The tension of the unwinding is controlled by the brake torque of the magnetic powder brake. As the continuous reduction of the winding diameter, the braking torque must be continuously reduced. The torque of the magnetic powder brake is automatically controlled by the tension controller so that the tension is constant.
Winding
The final winding speed is normally higher than the line speed of the material, so the magnetic powder clutch working in a slip state, the tension is controlled by the torque of the powder clutch. In order to keep the tension, The torque of the powder clutch brake must be increased or decreased according to the size of the web.
How To Lengthen The Service Life Of The Magnetic Powder Brake
In order to ensure the working quality of the magnetic powder brake, the high-quality magnetic powder must be adopted, which has the advantages of highly magnetic, high magnetic inductance strength, large transmission torque, etc.
The magnetic powder brake should not be operated in a humid environment, so as not to damage the magnetic powder. Relevant maintenance is required to ensure long service life.
The installation environment of the magnetic powder brake should be selected in a dry, ventilated environment, avoiding moisture and dust.
When the magnetic powder clutch and magnetic powder brake are applied to continuous sliding in the winding and unwinding process, the life of the magnetic powder will vary depending on the condition of the use and relative sliding speed, such as the high surface temperature, heavy load, damp, etc. However, when it is usually used under the allowable continuous slip power, the service life of the magnetic powder brake clutch can achieve about 5000 to 8000 hours when the torque is reduced at the rated current. If used at rated torque, since the magnetic powder brake and the magnetic powder clutch can be continuously sliding used, the service life can be extended. In addition, even if at the same slip power, when the sliding speed and the relative rotation speed continue to be in a high state, the lifetime of the magnetic powder is shortened, so it is recommended to set a smaller relative speed. Generally, relative to the allowable continuous slip power, if it can be used under relatively good conditions, it is also possible to lengthen the service life of the magnetic powder.
Summary
The magnetic powder brake is a multi-purpose and high-performance automatic control element, which adopts magnetic powder as working media, controlled through an exciting current to achieve the purpose of controlling braking or transmitting torque, widely applied for tension control of the unwinding and winding, dynamometer loading and braking of the transmission machinery.
Solventless lamination technology is an environmentally-friendly composite technology that has developed rapidly in recent years. It has the advantages of no solvent residues which has no pollution to the atmospheric environment, significantly reducing energy consumption, fast machine speed, etc. In the solvent-free lamination process, tension control is extremely important and must be very accurate. Tension control mainly includes the control for unwinding tension, film tension, auxiliary unwinding tension, winding tension, and winding taper.
The Application Of Tension Control In Solventless Lamination Machine
The tension of the solventless lamination machine is generally divided into four parts, including the first unwinding tension, the second unwinding tension, channel tension and winding tension. In the process of changing the roll diameter and production speed, solventless lamination has a requirement of constant tension. On the basis of ensuring the quality of the composite material, tension control of solventless lamination machine plays an extremely important role in improving the quality of the windings.
It is important to ensure that stable tension and winding integrity due to the frequent operations of starting and shutdown, acceleration and deceleration for solventless lamination equipment.
The floating roller has the function of absorbing kinetic energy. When the first unwinding tension is required to be constant, the second unwinding tension and the channel tension control adopt the low friction cylinder to control the swing rod tension control form to ensure the solvent-free. During the acceleration and deceleration, with the stable tension of the lamination machine, the membrane tension and relaxation caused by tension fluctuation are the smallest. If the first unwinding tension, the second rewinding tension and the channel tension are controlled by the bearing tension sensor, the first retraction unit harness, the second retraction unit harness, the coating harness, and the laminating harness are completely synchronized to ensure stability, acceleration and deceleration during the stretching process.
In addition, the flexibility of the guide roller rotation is an important factor in ensuring the stability of tension control during the acceleration and deceleration process. Under normal circumstances, the rotation of the guide roller is only synchronized with the moving movement of the film, so the ink on the film surface will not be scratched, which requires the static friction between the film surface and the guide rolls greater than the resistance of the roller. Therefore, the guide roller must be flexible with high assembly precision. The unwinding tension and channel tension of solventless laminator both have a requirement of constant tension. There are three winding methods, which include linear windings, hyperbolic windings, and parabolic windings.
The solvent-free adhesive is characterized by a solid content of 100%, low viscosity, low initial viscosity. If the composite intima is a stretched film such as PE film and CPP film, it is tried to use a hyperbolic winding method. When rolling up, the inner winding volume is relatively loose and the composite film is not wrinkled. The wrapped diameter is closely wound on the surface, with no bubbles on the surface.
Further, the winding pressure can also play a role of an auxiliary winding, and the air between the films is discharged, some of which have the effect of eliminating static electricity, which can increase the tightness and uniformity of the winding.
Key Points For Tension Control Of Solventless Lamination Machine
1. Generally speaking, the unwinding tension is based on the auxiliary unwinding tension. Increasing the main unwinding tension to match the auxiliary unwinding tension, making the composite film finally reach a flat straight state, the unwinding tension is the minimum tension without a wrinkle.
2. The tension of the film which is gluing, is slightly larger than the unwinding tension, which is used to tract the film, so that the corresponding coated steel roller does not require a large drive current.
3. The winding tension is slightly greater than the unwinding tension, the Initial viscosity of composite membrane which the winding tension needs to withstand, is only about 0.2 N / 15mm, and the winding taper is controlled within 20%, with the increase of coil diameter, the decreasing degree of tension is slower than dry lamination.
4. For the films of different materials, the tension in each part is different in the lamination process. Even the film has the same material and the tension is also very different depending on the different composite structures. For example, in the PET / PE structure, because PE is easy to stretch, its tension is substantially from 3N to 5 N. PET is contended with the shrinkage stress of P and its tension is relatively large, substantially 20N. But in the composite structure of PET/paper, since the stretchability of the paper is better, PET only requires the minimum tension, typically 5N.
Methods For Checking Whether The Tension Control Is Appropriate For Solventless Lamination Machine
Shut down the solventless machine, making a cut on the composite film with a blade at the winding position and the most ideal state is that the composite film remains flat. If the composite film is curled in a direction, which indicates the tension of the film is too large, the tension of the film should be appropriately reduced or increasing the tension of the film in another layer.
Summary
During solventless lamination, the requirements for tension control are higher than that of ordinary compounds. The solvent-free lamination machine tension control has high requirements, making the elongation of the two-layer material rolls as consistent as possible through accurate tension control to ensure that the two-layer coils don’t produce relative slip during the solventless laminating process. Accurate tension control is the premise of ensuring the quality of composite films.
The tungsten carbide bush also known as tungsten steel bushing, is a kind of component that protects the equipment, using the bushing, can effectively reduce the wear between the punch or bearing and the equipment and achieve a guiding role. The tungsten carbide bushing is mainly applied for stamping, with the features of wear resistance and impact resistance.
Excellent Characteristics Of Tungsten Carbide Bush
The tungsten carbide bushing has a series of excellent performances with high hardness, good concentricity, good perpendicularity, high wear resistance, high toughness, heat resistance and corrosion resistance. It has greatly improved the service life of the mold and has reduced the cost of molding manufacturers.
1. Advanced molding techniques can be adapted to produce a variety of shapes for carbide bush.
2. Small deformation with high accuracy.
3. High chemical stability.
4. High bending strength.
The Machining Method Of Tungsten Carbide Bush
The tungsten carbide bushing adopts CNC precision angles, inner hole grinder, precision surface grinding machine, precision internal and external round grinder, centerless grinder. The inner hole is grinded many times and polished into a mirror. The most suitable tool material for machining carbide bushing is a PCBN cutting tool.
The spray welding technology is adopted sometimes to increase the durability and service life of cemented carbide bush, which can reach HRC60 with better wear resistance. But the carbide bushing after welding needs turning machining to ensure the requirements for size and accuracy of the drawings.
Wide Applications Of Tungsten Carbide Bush
In the industrial fields, the application of cemented carbide bushing is very wide. The tungsten carbide sleeve is related to the role and purpose of its application environment in practical applications. In the valve application, the bushing should be mounted in the stem cover trap to reduce the valve leakage, for sealing. In the bearing application, the carbide bushing is adapted to reduce the wear between the bearing and the shaft seat, avoiding the clearance increasing between the shaft and the hole.
The tungsten carbide bushing is mainly used in the fields of stamping and stretching. The widely used tungsten carbide as tool material, includes a turning tool, a milling cutter, a planer, a drill bit, a boring cutter, etc, for cutting cast iron, non-ferrous metals, plastic, chemical fiber, graphite, glass, stone and ordinary steel, which can also be used for cutting materials which are difficult for machining, such as heat resistant steel, stainless steel, high manganese steel, tool steel.
In terms of stamping dies, the tungsten carbide bush is widely used because of high wear resistance, good finishing and no needing frequent replacement, thereby reaching the higher usage rate of equipment and personnel.
The carbide bushing has excellent chemical stability, which is widely applied in the industries of petrochemicals, submersible oil pumps, slurry pumps, water pumps, centrifugal pumps. With the increase in oil production, the shallow surface of the oil is reduced, In order to ensure oil usage, people have gradually developed to extract from the large deep well, but the difficulty of mining gradually increases and the mining components have high requirements for wear resistance, corrosion resistance or impact resistance. The tungsten carbide bush used as the wear-resistant component in the oil machinery, has high hardness, excellent wear resistance and a high degree of surface finishing, satisfying the use requirements for a daily and special performance in the oil machinery industry.
High performance tungsten carbide bush is a type of protective component with wide industrial applications, with high hardness, superior wear resistance, high strength, high toughness, heat resistance and corrosion resistance.
JTR has more than decades of experience in CNC manufacturing services in China and can offer one-stop service (CNC machining parts & CNC machining prototype) for our OEM customers. All processes are carried out through hundreds of advanced CNC Machining machines, lathes, and other manufacturing facilities, ranging from blasters to Ultra Sonic washing machines. JTR CNC Machining Center not only has advanced equipment but also have a professional team of experienced engineers, operators and inspectors to make the customer’s design come true.
Precision CNC machining services for the automotive, heavy truck, HVAC and mining industries. Works with gray iron, steel and aluminum castings as well as steel forgings and steel bar stock. Capable of horizontal machining parts of 25 x 36 in. and vertical machining
JTR offers the following CNC Machining services for our customers:
● Prototype Machining & custom machined parts
● Plastic 3D Printing & Metal 3D Printing
● Precision CNC Machining & Tooling & mold make Services
● Sheet Metal Prototyping & Sheet Metal Fabrication Service
China manufacturers 