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Measures to improve spring mass

2018 . 10 . 15

394

Daisy

(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 -- isothermal quenching can be adopted for springs with small diameter or sufficient permeability. It can not only reduce deformation, but also improve strength and toughness. It is better to conduct a...

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Spring manufacturing process

2018 . 10 . 12

397

Daisy

There are many ways of making spring, but the main forming part is cold forming and hot forming.In spring in the cold forming process, the spring mainly made by oil material toughening, lead bath quenching tempering spring wire, cold drawn wire, etc., using this kind of material in the manufacturing process of spring generally do not need special heat treatment and only requires the stress relieving, adopted by the spring design work stress and material performance.Spring cold forming process is generally suitable for special-shaped spring with small line diameter or more complicated shape, such as line diameter less than 15mm, various kinds of snap, pull, twist spring, convex, concave and arc spring, etc.The cold forming process is simple and avoids the deformation and decarburization of ...

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Overview of spring surface treatment

2018 . 10 . 12

287

Daisy

The spring is often corroded by the surrounding medium in the process of manufacture, storage and use.As the spring works under the influence of the spring force, the spring force will change and lose its function after being corroded.Therefore, preventing the corrosion of the spring can guarantee the stability of the spring and extend its service life.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, causing corrosion of the spring is called chemical corrosion.For example, the spring is oxidized in the particu...

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Type of paint used on spring surfaces

2018 . 10 . 11

405

Daisy

Type of paint used on spring surfacesThe oxidation treatment of the spring (also known as bluish, blackened, cooked black, etc.) is mainly used to prevent the corrosion of the spring, and also to make the spring appearance bright.Oxidation treatment methods include: alkaline oxidation, alkali free oxidation and electrolytic oxidation.Spring oxidation treatment is often alkaline oxidation treatment, in the presence of oxidants (such as sodium nitrite) in caustic sodium solution.As the solution approaches the boiling point, the iron on the surface of the spring dissolves and forms sodium ferrite and sodium ferrite, which is then made of ferrous ironSodium sulfate interacts with sodium ferrite to form magnetic iron oxide (Pe3O4), or oxide film, with a thickness of about 0.5-1.5 microns.The co...

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Introduction of high precision equipment to improve production technology

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The development course of spring material (Part 2)

2018 - 08 - 14

(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...

History of spring

2018 - 08 - 25

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...

Surface treatment of spring equipment prolongs service time

2018 - 09 - 10

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...

Discussion on the advantages of compressed spring products

2018 - 09 - 21

Compression springs are frequently seen and used in daily life. The main principle of compression springs is to provide a hand to the machine and drive it to work.The compression spring has a certain damping capacity, because the product's elastic force is not a fixed value, so every time it is used, there will be a return force, and the force is not a fixed size, which to some extent has the ability to slow down the vibration.As an example, now the car is installed above a compression spring, you will find when driving, its speed is greatly improved, and the movement process there is no s...

Oxidation treatment of spring surface

2018 - 10 - 08

The oxidation treatment of the spring (also known as bluish, blackened, cooked black, etc.) is mainly used to prevent the corrosion of the spring, and also to make the spring appearance bright.Oxidation treatment methods include: alkaline oxidation, alkali free oxidation and electrolytic oxidation.Spring oxidation treatment is often alkaline oxidation treatment, in the presence of oxidants (such as sodium nitrite) in caustic sodium solution.As the solution approaches the boiling point, the iron on the surface of the spring dissolves and forms sodium ferrite and sodium ferrite, which is then ma...

Points to note when using a extension spring

2018 - 10 - 18

For a long time, the shape and performance of the extension spring will change. If the extension spring is always in a certain situation, it may change its quality due to external conditions.Generally, there are the following situations:I. wear of extension spring :Wear can be divided into abrasive, fatigue and corrosion wear fracture.Ii. Brittle fractureThe majority of spring break belongs to brittle fracture.Plastic fracture is possible only when the working temperature is high.In engineering, fatigue fracture, stress corrosion fracture and hydrogen embrittlement fracture are called brittle ...

How to choose spring wire

2018 - 11 - 01

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...

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...

Spring is the most commonly used component in the machinery and electronic products industry.

2018 - 07 - 14

Spring is one of the most commonly used parts in the mechanical and electronic products industry. It can produce very large elastic deformation when it is loaded, and this elastic deformation also transforms mechanical work or kinetic energy into deformation energy, which can unload the change of spring, and disappear and return to the original shape, finally, finally. Transformation of deformation energy into mechanical work or kinetic energy. With the continuous progress of the times, the application of spring is very wide, the automobile, computer, TV, pin, phone, cell phone and so on are u...

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A brief history of the development of Hooke's law

2018 - 08 - 09

At first, during the experiment, Hooke found that the weight added to the spring was proportional to the elongation of the spring, and he tested his conjectures by many experiments. In 1678, Hooke wrote a spring paper, which introduced the results of experiments on elastic objects, laying the foundation for the development of material mechanics and elastic mechanics.Spring dynamometerIn the early nineteenth Century, under the premise of a lot of experimental work in the former, British scientist Thomas Yang summed up the research results of Hooke and others, pointing out that if the elongation...

Types of Springs and their Applications

2018 - 08 - 21

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 sac...

Analysis of deformation prevention measures for heat treatment of metal spring(part 1)

2018 - 09 - 07

There are two types of heat treatment deformation: one is the size change, the other two is the change of part geometry. Different methods of heat treatment, deformation and deformation prevention of parts size and geometry are also different.The longer the holding time and the higher the temperature are, the more carbon is dissolved into austenite and the larger the expansion of martensite is. The expansion of martensite is the largest, followed by upper bainite, and the volume change of lower bainite and troostite is very small. At low temperature tempering, martensite shrinks and the amount...

Spring machine regular maintenance and daily maintenance is very important

2018 - 09 - 19

Spring machine is now in the production of spring necessary equipment, due to the abundant of spring and the increase of precision is also more and more high to the requirement of spring machine, the spring machine maintenance is particularly important at ordinary times, and the main factors affecting the service life of spring machine has two, one is the operator of whether scientific and standardized operation, another is reasonable in daily maintenance.After using the spring machine for a period of time, the efficiency of the machine will be significantly reduced, affecting the efficiency o...

Analysis of spring corrosion

2018 - 09 - 29

Selection of spring material

2018 - 10 - 16

The selection of spring material shall be determined according to the properties of the spring bearing load, stress state, stress size, working temperature, environmental medium, service life, requirements for conducting and magnetic conductivity, technical performance, material source and price, etc.When determining the shape and size of the material section, the series sizes specified in the national standards and ministerial standards should be selected first, and non-standard series of materials should be avoided as far as possible.Medium and small-sized springs, especially spiral-tension ...

Proper use of the spring

2018 - 10 - 26

Please avoid the improper way of using (1) more than the use of the maximum compression (300000 back to the conditions, after a close with the use of a long) stress causing the wreck, close to close with the use of a long, can make the spring line department gradually close to that, because of the high spring constant change caused by load curve with high, nearly and produce high stress to make spring break, please do not use more than 300000 times.The use of the spring without prepressure due to the gap caused the spring up and down vibration caused the spring distortion, if there is prepress...

Precision metal spring

2019 - 12 - 23

Precision metal stamping is a cold-form manufacturing process that converts metal sheets into desired shapes—be it parts, components, or finished products—for a variety of applications. In metal fabrications shops or manufacturing operations, metal sheets, known as blanks, are fed through the tool and die surface of stamping presses to shape and shear the blanks into a finished three-dimensional object. Precision metal stamping services allow for mass production of complex parts in any quantity for nearly all industry. The automotive industry, in building and construction,...

Inspection content and specification for spring parts(part 3)

2018 - 07 - 28

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 ...

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Hot News / 热点新闻

Constant Force Spring

2020 . 01 . 13

点击次数: 163

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 radi...

Compression Springs

2020 . 01 . 13

点击次数: 159

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 i...

Spring wire materials

2020 . 01 . 06

点击次数: 116

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 S...

What is the cleaning and cleaning of stainless steel springs?

作者： nelson

发布时间： 2018 / 09 / 03

点击次数： 74

In order to remove the detergent, wash the surface with clean water at the end of washing.Surface condition and washing methodDust and easy to remove dirt - wash with soap, weak lotion or warm water.Label and film: scrub with warm water and weak detergent.Binder composition - using alcohol or organic solution;Fat, oil, lubricating oil contamination - with a soft cloth or paper after drying with a neutral detergent or ammonia solution or special detergent to wash;Bleaching agent and seed acid adherence - immediately rinse with water, soak in ammonia or neutral soda solution, then wash with neutral detergent or warm water;Adhesion of organic carbides - soak in a hot neutral detergent or ammonia solution and then wash with a detergent containing a weak abrasive.Fingerprints dry with alcohol o...

Steps of hardware spring pressure test

作者： nelson

发布时间： 2018 / 09 / 03

点击次数： 105

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. Compress the spring to the test load once before the formal test. When the test load is heavier than the pressure and the load, the test load is the pressure and the load, but the maximum pressure and the ...

Causes and preventive measures of quenching cracks

作者： nelson

发布时间： 2018 / 08 / 31

点击次数： 137

1. Shape effect is mainly caused by design factors, such as small fillet R, inappropriate location of acupoints, poor cross-sectional transition. 2. Overheating (overheating) is mainly caused by improper temperature control or running temperature, excessive process setting temperature, uneven furnace temperature and other factors. Preventive measures include overhaul, calibration of temperature control system, correction of process temperature, the addition of pad iron between the workpiece and furnace floor, etc.3. Decarbonization is mainly caused by overheating (or overburning), unprotected heating of air furnace, small machine surplus, residual decarbonization layer of forging or preparatory heat treatment, etc. The preventive measures are controlled atmosphere heating, salt bath h...

Review spring drawings, which items should be examined?

作者： nelson

发布时间： 2018 / 08 / 31

点击次数： 52

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.

Steps of hardware spring pressure test

作者： nelson

发布时间： 2018 / 08 / 30

点击次数： 37

Analysis of surface defects of carbon steel wire rod

作者： nelson

发布时间： 2018 / 08 / 29

点击次数： 226

In view of the harm caused by the surface defects of high carbon steel wire rods, the surface defects of high carbon steel wire rods were systematically analyzed by means of surface pickling, metallographic analysis and scanning electron microscopy, the types of defects were determined, the causes of defects were analyzed, and the improvement measures were put forward. After the implementation of these measures, the surface defects of high carbon steel wire rods were basically eliminated. Surface quality defects. The conclusions are as follows: 1. The surface defects found in high carbon steel wire rods are mainly related to rolling folding and hot scratch. The main measures are to adjust the gap between the rolls of the middle rolling mill and the reducing sizing mill RSM, to repair ...

Production of spring

作者： nelson

发布时间： 2018 / 08 / 28

点击次数： 56

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 spring process has to be cut off, a spring connected to several springs is separated into a single spring.Some important springs can add a blank height classification procedure before grinding the face t...

How to protect the surface of the spring?

作者： nelson

发布时间： 2018 / 08 / 27

点击次数： 86

Core tip: the surface of spring can be generally treated, such as blackening (blue), phosphating, electroplating, spray molding, etc. In recent years, the zinc chromium film dacroa DACROMET dacroa protective layer has excellent corrosion resistance, which is 710 times the corrosion resistance of the traditional electroplating layer, and there is no hydrogen embrittlement in the electroplating process. Generally, the surface of springs can be treated, such as blackening (blue), phosphating, electroplating, spray molding, etc. In recent years, the zinc chromium film "dacrom DACROMET dacroa protective layer" has excellent corrosion resistance, which is 7-10 times the corrosion resistance of traditional electroplating layer, and there is no hydrogen embrittlement of electroplati...

History of spring

作者： nelson

发布时间： 2018 / 08 / 25

点击次数： 45

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