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HOT INFORMATION / More

2018 - 04 - 18

To grow the business, we need to develop management expertise and innovation across the team.Thia is the picture of AFR team development activity in one of the shenzhen beach, From the faceof young team, we can see the confidence and what they want to achieve!

Inspection content and specification for spring parts(part 1)

2018 - 07 - 27

1, Test classificationA) First inspection;B) Quality consistency check.2, A spring group of groupsThe spring shall be inspected according to the batch. Each batch shall consist of the same material specifications, grades, melting furnace numbers and springs made under the same technological conditions.3, First test3.1 The inspection of the production of the spring first piece must be carried out according to the test or inspection items specified in the drawings, and the determination of qualified and unqualified shall be made. 3.2 The first piece of spring must be checked and recorded in...

Manufacturing of Springs

2018 - 08 - 08

Springs can also be classified by how they’re made. The first spring that comes to most people’s minds is probably a metal coil spring, also known as a helical spring. However, there are many other types. Even an elastic band can be considered a variable rate spring, since it stores mechanical energy. Coil SpringsLightweight coil springs are made by forming metal wires on an CNC coiling machine. The multi-axis CNC control allows you to create variable pitches and end conditions only limited by your imagination. Springs that come off the coiling machines do not have springy properties. They nee...

History of spring

2018 - 08 - 21

Like most other basic mechanisms, metal springs have existed for a long time in the bronze age. Even for metals, wood is used as a structural member of flexible bow and arrow and military catapult. In the Renaissance, precise clocks made precision springs the first necessity. In Fourteenth Century, we saw the precise clock of revolutionary astronomical navigation developed. The world's exploration and conquest of European colonial powers continue to provide impetus for watchmakers "science and art." The other area of the firearm promotes the development of the spring. At the dawn...

Which industry is the main application of spring?

2018 - 09 - 05

1, matching springs and springs based on automobiles, motorcycles, diesel engines and gasoline engines. This type of spring has valve spring, suspension spring, damping spring and clutch spring, etc., with a large amount, which accounts for about 50% of the spring production. At the same time, the technical level is also high, it can be said that the technical level of these springs is representative, they are mainly to the high fatigue life and high anti relaxation direction, thus reducing the quality. 2. Large springs and plate springs, which mainly include railway rolling stock, heavy ...

How to choose spring wire

2018 - 09 - 18

1) make it clear whether to use raw drawn steel wire or lead hardened steel wire;2) propose the requirements of steel wire diameter, strength grade (group) and standard number (select according to table 1.1);3) if there are special requirements such as strength and diameter allowable error, etc. (standard parameters are in parts 2 and 3);4) special packaging and marking requirements (see 1.4);5) carbon steel spring suitable for long-term work under the condition of temperature 121 ℃, highest working temperature should be chosen alloy spring steel.3 special needsShaped cross section: square, re...

Automatic spring winding process

2018 - 09 - 28

The diameter of wire wound by automatic spring machine is 0.2-3mm, and the adjustment process is as follows:1. Calibrate the feeding roller and winch to fit the diameter of steel wire and install the pitch wedge and cutting knife.2. Insert the steel wire into the spring machine and press the pressure plate and feeding roller.3. Adjust the distance of winding xiao zi, control the diameter of spring, and adjust the pitch wedge and xiao zi Angle to control the spring pitch and parallel head.4. Install an appropriate cutter, adjust the feeding CAM according to the spring expansion length, cut off ...

Measures to improve spring mass

2018 - 10 - 15

(1) deformation heat treatment -- the combination of deformation reinforcement and heat treatment enhancement to further improve the strength and toughness of steel.Heat treatment of deformation has high, medium and low temperature.The high temperature deformation heat treatment is to produce the deformation immediately after the austenitic state at a stable distance, or can be combined with forging or hot rolling, that is, quenching immediately after hot forming.The deformation heat treatment has been applied to automobile plate spring production.(60 si2mn)(2) isothermal quenching of spring -...

Production of spring

2018 - 10 - 25

The technological process of helical springs refers to the process of converting spring materials into finished springs, which flow through every process in sequence. Because of the spring material, the spring type and the processing method are different, the technological procedures of the spiral spring are also different. However, their basic technological processes are coil spring heat treatment end processing surface treatment.Next, introduce several typical processes.1. manufacturing compressed spiral spring with cold drawn spring steel wireFor the lathe coil spring, after the winding spr...

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Team development activity

2018 - 04 - 18

Summary of spring parameters and symbols (Part 4)

2018 - 08 - 02

M- mass of the object acting on the spring (kg)Ms- spring mass (kg) N- variable load cycle number N- spring working circle Nz- spring support ring number N1- total number of turns of the spring P'- Spring single ring stiffness (N/mm) R- The middle radius of the coil (mm) R1- inner radius of the coil (mm) R2- outer radius of the coil (mm) R- damping coefficient S- safety factor T-torque; torque (Nmm) T'- torsional stiffness (N-mm /(0))T- spring momentTc- cable p...

Inspection content and specification for spring parts(part 3)

2018 - 08 - 16

6.1.10 detection of parallelism between ends of springs: the spring is placed vertically on the plate.The difference between the maximum and minimum values of the surface of the end ring is measured by the dial indicator. The difference between the maximum and minimum values is the parallelism deviation between the ends of the spring.6.1.11 spring straightness detection: put the spring level on the plate and roll one.Zhou, determine its maximum bending position and measure the gap between the maximum bending point and the flat plate with a feeler gauge.The measured gap is the deviation of the ...

Review spring drawings, which items should be examined?

2018 - 08 - 31

Spring drawings should be audited as follows: geometric parameters audit; physical parameters audit; technical conditions audit.(1) geometric parameters include material size, spring diameter, spring coil number, free height, spring rotation and so on.(2) physical parameters include load, stiffness, theoretical value of deformation, tolerance and so on.(3) Technical conditions include geometric tolerance, heat treatment process requirements, surface treatment, elastic compression treatment and shot peening treatment.

Introduction of heat treatment process -- surface quenching

2018 - 09 - 13

The surface of steel is hardenedIn some parts, the surface layer of the workpiece bears higher stress than the core under the action of alternating loads such as torsion and bending and impact loads.In the case of friction, the surface layer is also constantly worn. Therefore, high strength, high hardness, high wear resistance and high fatigue limit are put forward for some surface layer of parts. Only surface strengthening can meet the above requirements.Because surface quenching has the advantages of small deformation and high productivity, it is widely used in production.According to differ...

Characteristics of torsion springs for spring equipment

2018 - 09 - 25

Torsion spring is a mechanical force storage structure, mainly used in ancient crossbow guns and other crossbow.The torsion spring accumulates the force through the twist or rotation of the elastic material with a relatively soft and pliable material, and makes use of it so that the projectile has certain mechanical energy.The modern torsion spring torsion bar is made of excellent elastic steel, and the form is also changed a lot, including the wire on the inner surface of the mechanical watch, the power spring in the toy gyroscope gun, as well as the torsion bar in the tank and car.Small...

The finish of the spring surface

2018 - 10 - 10

In recent years, the surface of the spring has been treated by the spring designers.The finishing (finishing) process is to put the spring directly into a series of finishing machines, such as tilting centrifugal type or spiral vibrating type, eddy current type, and add appropriate grinding materials, grinding agents and water for finishing.General optical finishing is about 20 to 30min. Specific optical finishing time depends on the spring shape and the amount of device.After finishing the finish, remove the spring and rinse it with tap water, then immerse in the SM series water film replacem...

The basis of spring material selection

2018 - 10 - 20

1) the selection basis of environmental factors in the use state of spring products: corrosion resistance, acid corrosion resistance, alkali corrosion resistance, salt corrosion resistance, water corrosion resistance, etc.Weather resistance;Resistance to stress and corrosion, fatigue and corrosion, etc.Wear resistance;Temperature resistance, etc.Radiation resistance, etc.2) selection basis of load characteristics of spring products: dynamic pulse-type cycle load, variable load, impact load, corrosion fatigue load, static load, large load and fatigue load, etc.3) selection basis of mechanical p...

The role of spring in driving mechanism of press machine

2018 - 11 - 03

In the transmission mechanism of the press, when the clutch and the brake adopt mechanical rigid interlock, as long as the air is set on the clutch.The cylinder, the air pressure ACTS on the piston of the cylinder to make the clutch friction pair fit, and to make the air pressure of the spring brake brake friction pair separate and not brake, so when the air cylinder enters, the brake friction pair should be separated first, and then the clutch friction pair fits to complete the combination.The friction pair separation of the clutch and the friction pair fitting of the brake are respectively a...

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flat wire springs

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Flat wire spring:

Wire Form, Diameters Available: 0.1 to 3mm, Suitable for Cars, Electric Appliance and Cameras

•Material: standard

•Shapes: round, flat and square wire

•Advanced manufacturing and testing equipment

•Strict quality control and management

•Applications: cars, machines, electronic products, electricappliance, cameras, stationery, computers, power switches,miniature switches, architecture, commodity, home appliance, A/Vequipment, hardware and plastic molds, sports equipment andgifts

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last: noNext：Flat wire spring

13

Constant force spring, or “clock” spring, is a roll of prestressed strip which exerts a nearly constant restraining force to resist uncoiling. The force is constant because the change in the radius of curvature is constant. Such applications as brush springs for motors, counterbalance springs for window sashes and carriage return springs for typewriters. Constant force motor springs are used to drive mechanisms for timers, movie cameras and cable retractors.Constant force spring also known as coil spring helix in a plane of the spring, Spring is the material wound into a plane of the spiral of a spring, the spring is fixed at one end, the other end of the material after acting torque bending torque, bending elastic deformation, so the spring in its own plane to p...

Compression Springs

2020 . 01 .

13

A compression spring is an open-coil helical spring that offers resistance to a compressive force applied axially. They are usually coiled at a constant diameter, though they can be coiled in other needed forms such as conical, concave (barrel), convex (hourglass), or various combinations of these. Compression springs are used to resist force and/or store energy,1、CharacteristicsBy far the most widely used type of spring, compression springs are designed to oppose compression and return to its uncompressed length when the applied force is removed. 2、Service LifeIt should be noted that if critical force-versus-deflection linearity is required, only the center 60-80% of the available deflection range should be employed.Thus, reserve at least the first and last 15-20% of t...

Spring wire materials

2020 . 01 .

06

When choosing the right spring, selecting the best spring wire is a critical before manufacturing. Below are some of the most common spring wire materials and their unique characteristics .Stainless Steel SpringsStainless steel springs have low-stress relaxation and resist corrosion. They have good strength at moderate temperatures and are resistant to heat. Extension springs are most commonly made from stainless steel.Extension springs absorb energy and provide resistance to pulling. As the name suggests, an extension spring stretches as a load is applied to it. Applications for extension springs include carburetors, trampolines and farm machinery.Oil Tempered Spring WireOil tempered wire is cold drawn and heat treated before plating. Ideal as a general purpose spring wire, it is often us...

Compression spring,torsion spring,extension spring,wire forming spring

2020 . 01 .

06

springs are a mechanical part that use elasticity to work. Generally made of spring steel. It is widely used in machines and instruments to control the movement of machine parts, mitigate impact or vibration, store and store energy, measure force, etc.The spring is just an accumulator, it has the function of storing energy, but can not release the energy slowly, to achieve the release of this function should rely on the 'spring + large transmission ratio mechanism' to achieve, common in the mechanical table.The spring is widely used in the mechanical and electronic industry. The spring can produce a large elastic deformation under load and convert mechanical work or kinetic energy into deformation energy. After unloading, the spring's deformation disappears and returns to its o...