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The development course of spring material (Part 2)

2018 - 07 - 23

(4) the development of stainless steelChina is a big country in the production of stainless steel. With the production and development of stainless steel, many varieties have been developed naturally. At present, more than 50 kinds of stainless steel have been developed, which basically meet the needs of domestic production and development, and a brief description of some new varieties developed at present.1) the initial formation of austenitic stainless steel system. Low carbon austenitic stainless steel 0Cr18Ni9 and 00Cr17Ni2Mo2 have been developed to eliminate fatigue corrosion caused by ca...

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 ...

Steps of hardware spring pressure test

2018 - 08 - 30

The spring pressure test of metal springs usually uses electronic digital spring tension and compression testing machine. Electronic digital spring tension and compression testing machine is a special instrument for testing the deformation and load relationship characteristics of tension and compression springs. It is suitable for testing the working load of the tension and compression spring under a certain working length, and also for testing the elastic load of elastic devices such as rubber and spring.The pressure test of metal springs is generally divided into the following steps:1. Compr...

Method of spring-surface paint

2018 - 09 - 12

There are many methods of construction of paint, most of which are used for springs in the following ways:(1) dip coating method dip coating method is to dip the spring into the paint groove, and then take out, and let the excess paint on the surface drip naturally. After drying, it is covered with paint film on the surface of the spring.The dip-coating method has high production efficiency and can be applied to mechanization and automation production.But the paint volatilizes quickly, the paint that contains heavy quality pigment and two component paint material (amine solidify epoxy paint, p...

Working characteristics of pressure spring

2018 - 09 - 25

Nowadays, with the development of science and technology, spring has become a very important hardware accessory in our life. Different products use different springs, and the longest used springs can be roughly divided into: pull spring, twist spring, press spring, disc spring and plate spring.The following features of a very practical tension spring:Many different products or hooks are used to guarantee the source of the tension of the tension spring. The tension spring works in the opposite way to the compression spring. The tension spring works in the opposite way when stretching or pulling...

Testing spring residual stress

2018 - 10 - 10

Spring steel wire will generate residual stress during the process of cold drawing and oil quenching and heat treatment. Moreover, spring wire is formed during the process of manufacturing and shot peening is conducted.High frequency quenching, carburizing, nitrification, etc. are used as surface hardening treatment. As a result of these treatments, residual stress will be generated in the material.The qualitative and quantitative analysis of the residual stress of the material will be an important factor to improve the fatigue properties of the spring.Residual stress of the spring is usually ...

Spring calibration process

2018 - 10 - 20

After the end face grinding, if the free height, perpendicularity, pitch and outside diameter of the spring do not meet the deviation specified in the pattern, the screw compression spring often needs to be corrected.Calibration operations are generally manual or semi-manual.The commonly used tools are: the spring with the metal wire above 4mm, multi-purpose manual pressure machine, splitting machine, press and so on;For springs with wire under 4mm, special tools, pliers and hammers with wedge edge are often used.Calibration is to use these tools to make the spring locally plastic deformation ...

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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Inspection content and specification for spring parts(part 5)

2018 - 07 - 30

Detection of the characteristics of 7.2 torsion springsWhen measuring torque, the size of the torsional spring axis must be suitable. The inner diameter of the spring should be kept to a certain gap, and the friction force and friction torque caused by the contraction of the inner diameter of the spring should be avoided, and the measurement accuracy should be affected. But the spindle can not be too small, otherwise it will cause the offset between the external torque and the measuring torque center, resulting in the error of the torque measurement. The specific testing program for torsion sp...

History of spring

2018 - 08 - 13

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...

Wire forming spring

2018 - 08 - 25

Wire forming spring is a mechanical part that uses elasticity to work. It is usually made of spring steel. It is used to control the movement of machine parts, to mitigate impact or vibration, to store energy and to measure the magnitude of force. It is widely used in machines and instruments.The spring is just an accumulator. It has the function of storing energy, but it can not release the energy slowly. To realize the function of releasing slowly, it should be realized by "Spring + large transmission ratio mechanism", which is common in the mechanical meter.Spring is a kind of ela...

How to prevent cracks at the ends of spring grinding

2018 - 09 - 10

Spring grinding is easy to produce cracks at the end of the tightness, and directly affect the verticality of the spring, load and free length size, so the general grinding process of spring should be carried out after stress relief tempering. Eliminate the residual stress of steel wire cold drawing to prevent the generation of end gap cracks.The main factors that affect the quality of springs in grinding are as follows:(1) The grinding wheel should be selected reasonably; (2) the control of the bevel angle of the end ring; (3) a certain number of special measuring tools should be equipped to ...

The corrosion of spring can be divided into chemical corrosion and electrochemical corrosion accordi

2018 - 09 - 20

The corrosion of spring can be divided into chemical corrosion and electrochemical corrosion according to the type of reaction.They are the result of changes in the metal atoms on the surface of the spring or the loss of electrons to an ionic state.If the metal on the surface of the spring simply reacts with the surrounding medium, and the spring causes corrosion, it is called chemical corrosion.For example, the spring is oxidized in the particularly dry atmosphere to form an oxidation film, and the spring is chemically changed with the liquid or impurity in the non-electrolyte liquid, which i...

How to clean stainless steel spring

2018 - 09 - 30

Washing method according to the surface state:General notice when washing, please pay attention not to scratch the surface to avoid the use of bleaching ingredients and abrasive solution, steel wire ball (brush roller ball), grinding tools, etc. In order to remove the washing liquid, wash the surface with clean water at the end of washing.Surface condition and washing methodDirt and scale removal - wash with soap, mild detergent or warm water.Label and film -- scrubbing with warm water and weak detergent;Binder ingredients - use alcohol or organic solutions;Contamination of fats, oils, lubrica...

The chemical protective layer of the spring

2018 - 10 - 17

A compact protective film is formed on the surface of the spring by chemical reaction to prevent the corrosion of the spring.Generally, oxidation treatment and phosphating treatment are used.Oxidation treatment and phosphating treatment have low cost and high production efficiency. Generally, spring manufacturers adopt oxidation treatment as corrosion prevention treatment.1.Oxidation treatment of steel is also known as bluing, blackening and boiling black.After oxidation treatment, the surface of the spring produces protective magnetic iron oxide, which is generally blue or black or sometimes ...

Torsion spring

2018 - 10 - 29

The torsion spring is divided into single torsion spring and double torsion spring. The spring is usually inserted into the pin or shaft. When external force is applied, a torsion force is generated according to the shaft center of the spring to make the spring coiled tightly or loose.Double - twist spring is divided into external double - twist and internal double - torque spring.The loops are either closely encircled or separately encircled to allow for a load of torque (at right angles to the spring axis).The end of the spring can be wound into a hook or straight twist arm.The following is ...

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...

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Types of Springs and their Applications

日期： 2018-04-18

浏览次数: 113

Springs are ubiquitous in all kinds of machines—from consumer products to heavy industrial equipment, take apart anything that involves a mechanism, and chances are, you’ll find a spring inside. Springs are storage devices for mechanical energy—think of them as analogous to batteries! The earliest spring-driven clocks appeared in the 1400s. Fast-forward some 600 years, you still have to charge the Apple Watch everyday, and it’s not nearly as fast as winding a clock…but I digress.

My personal fascination with springs began with Slinkies and wind-up toys, and countless mechanical pencils were sacrificed to satisfy my curiosity. These days, I appreciate the grown-up applications of springs, especially when I drive over potholes on Highway!

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Constant Force Spring

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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

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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

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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...

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