HOT INFORMATION
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  • 2018 . 11 . 03
    349
    Daisy
    Internal combustion engine valve spring, low, medium and high stress valve spring, safety valve spring, pressure reducing valve, electric regulating valve, pneumatic regulating valve, self-support regulating valve, hydraulic control valve, steam trap, gate valve, as per valve, butterfly valve, ball valve, check valve, special valve, hydraulic valve, electromagnetic valve, etc.Relief valve: spring safety valve by using the spring force, spring loaded relief valve is closed and not closed in two kinds of structure, general inflammable, explosive or toxic medium should choose enclosed, steam or inert gases can choose not enclosed, in spring safety valve with a wrench and without a wrench, wrench mainly is to check the effect of the flexibility of the disc, sometimes also can be used as a manu...
  • 2018 . 11 . 03
    293
    Daisy
    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 achieved by the clutch reset spring and the brake spring. Therefore, when the cylinder is vented, the brake spring and the reset spring separate the clutch friction pair and then make the brake fr...
  • 2018 . 11 . 02
    403
    Daisy
    Zinc electroplating: zinc is stable in dry air and changes little. A white film of zinc oxide or carbon zinc carbonate is formed in moist air. This dense film will prevent further corrosion. Therefore, the galvanizing layer is used for the spring corrosion protection under general atmospheric conditions. Zinc coating should not be used for all springs that are in contact with solutions such as sulfuric acid, hydrochloric acid and caustic soda, as well as springs that work in humid air such as sulfur trioxide.Generally, passivation of galvanized coating can improve the protective performance of coating and increase the appearance of coating.· cadmium electroplating: in the atmosphere of sea or high temperature, and the spring in contact with sea water, and in the spring in 70 pens of h...
  • 2018 . 11 . 02
    605
    Daisy
    Cylindrical spiral spring structureThere are three types of cylindrical spiral spring:1. Cylindrical spiral compression spring1) spacing between springsLet the spring's pitch be p;The diameter of the spring wire is d;In the free state, there should be proper spacing between the circles.In order to make the spring still maintain a certain elasticity after compression, it is also necessary to ensure that there is a certain gap of 1 between each circle under the maximum load.The size of lens 1 is generally recommended to be: in addition 1=0.1d or greater than 0.2mm2) dead circleThe two ends of the spring are closed with the adjacent ring (no gap), which only supports the spring without deformation.When the number of working rings of the spring is less than or equal to 7, the dead ring at ...
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28
2018 - 07 - 24
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...
29
2018 - 08 - 06
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...
30
2018 - 08 - 17
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...
31
2018 - 08 - 31
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), unprote...
32
2018 - 09 - 14
Manufacturers of heat treatment furnaces are adopting new features designed to improve the overall temperature distribution of their equipment: with improved ambient flow patterns, carefully designed energy and dynamic densities have brought very useful working capabilities.Process consistency is a major issue for aerospace (typically, Nadcap and AMS2750 U.S. army standards) and automotive (TS16949 test equipment) customers, and compatibility with more acceptable standards is building confidence between heat treatment equipment manufacturers and customers.This is especially true when the heat ...
33
2018 - 09 - 26
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 ...
34
2018 - 10 - 11
Manufacturers of heat treatment furnaces are adopting new features designed to improve the overall temperature distribution of their equipment: with improved ambient flow patterns, carefully designed energy and dynamic densities have brought very useful working capabilities.Process consistency is a major issue for aerospace (typically, Nadcap and AMS2750 U.S. army standards) and automotive (TS16949 test equipment) customers, and compatibility with more acceptable standards is building confidence between heat treatment equipment manufacturers and customers.This is especially true when the heat ...
35
2018 - 10 - 22
Osmosis detection will be the basic principle of the spring of dip coating (penetrant) some penetration ability of the solution, the infiltration of surface defects, and then to remove excess penetrant, appeared in the surface layer of the tu yi agent again, at this point defects remaining in the penetrant sucked out, under the purple pay-off (fluorescence) observation or direct observation, can be found that the existence of defects.Osmotic detection can be used for the detection of ferromagnetic springs as well as non-ferromagnetic materials such as copper alloy and austenitic stainless stee...
36
2018 - 12 - 03
Today, the development of science and technology, spring has been a very important hardware accessories in our life, different products use the spring is not the same, the longest used spring can be roughly divided into: tension spring, torsion spring, compression spring, spiral spring, flat spring.The following is a very practical tension spring characteristics of the application:Many different products or hooks are used to ensure that the tension spring tension source, tension spring and compression spring work in the opposite way, tension spring is in the extension or pull out of the revers...
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28
2018 - 04 - 18
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 need...
29
2018 - 08 - 08
The spring is often subjected to variable load or impact load. In order to ensure that the spring can work permanently and reliably, the material must have high elastic limit and fatigue limit. At the same time, it should have enough toughness and plasticity and good heat treatment.Spring materials and properties can be consulted in relevant manuals, specifications and standards (GB/T129.6-92, GB4357-89). The common spring steel is mainly:1: carbon spring steelThis kind of spring (such as 65, 70 steel, etc.) has the advantages of cheap price, convenient source of raw materials, low elastic lim...
30
2018 - 08 - 20
8.3.3 test machine should have the following functions: test time or preset function;Dynamic timing or counting function; test amplitude display or control function; automatic stop function.Evaluation of 8.4 spring fatigue test results8.4.1 fatigue life determination: under a given failure condition, the measured spring reachesThe maximum cycle number is the fatigue life of the spring.Verification of 8.4.2 fatigue life: if the number of cycles is tested, if the spring does not failThe validation test proved that the test was passed.8.4.3 reliability verification: according to the given reliabi...
31
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 ...
32
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...
33
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 ...
34
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 -...
35
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...
36
2019 - 12 - 16
Helical springsMaterials necessary for every aspect of daily life.  Helical spring is a spring that is subjected to torsional deformation, and its working part is also tightly wound into a helical shape. Its characteristic line is linear, can make compression spring, stretch spring and torsion spring. When the load is large and the radial size is limited, two compression springs with different diameters can be used together to become a combination spring. The total winding number n1 is the sum of the effective winding number n and the supporting winding number n2. Volute coil helical...
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Hot News / 热点新闻
2020 . 01 . 13
点击次数: 40
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...
2020 . 01 . 13
点击次数: 52
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...
2020 . 01 . 06
点击次数: 19
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...
作者: Daisy
发布时间: 2018 / 10 / 22
点击次数: 309
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 is a chemical corrosion.If the spring is in contact with the electrolyte solution, the corrosion caused by the action of the micro battery is called electrochemical corrosion.For example, the spring is...
作者: Daisy
发布时间: 2018 / 10 / 22
点击次数: 157
Osmosis detection will be the basic principle of the spring of dip coating (penetrant) some penetration ability of the solution, the infiltration of surface defects, and then to remove excess penetrant, appeared in the surface layer of the tu yi agent again, at this point defects remaining in the penetrant sucked out, under the purple pay-off (fluorescence) observation or direct observation, can be found that the existence of defects.Osmotic detection can be used for the detection of ferromagnetic springs as well as non-ferromagnetic materials such as copper alloy and austenitic stainless steel springs.(1) oil immersion test can be used for spring whose diameter of wire is greater than 8mm.The spring that has been cleaned on the surface is immersed in kerosene, or the mixture of 50% (mass ...
作者: Daisy
发布时间: 2018 / 10 / 20
点击次数: 397
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 properties and strength characteristics of spring products: tensile strength, yield strength or flexure ratio, hardness, thermal hardness, reduction of section, elongation, impact toughness, relaxation...
作者: Daisy
发布时间: 2018 / 10 / 20
点击次数: 312
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 to achieve the required size of the pattern.1、 application of calibration process1) outside diameter correction.In general, coil spring can guarantee the deviation of outer diameter, but when the spri...
作者:
发布时间: 2018 / 10 / 19
点击次数: 25
When the spring is made from materials that do not need to be hardened or tempered after forming, the process is spiral compression spring: rolling, de-stressed annealing, grinding of two ends, (shot blasting), (rectification), (de-stressed annealing), standing or strong pressure treatment, inspection, surface anti-corrosion treatment, packaging.Coil stretching spring: rolling, de-stress annealing, hook making, (cutting the tail), de-stress annealing, standing treatment, inspection, surface anti-corrosion treatment, packaging.Spiral torsion spring: rolling, de-stress annealing, torsion arm making, cutting tail, de-stress annealing, standing treatment, inspection, surface anti-corrosion treatment, packaging.The manufacturing process of spiral drawing and torsion spring described above is to...
作者: Daisy
发布时间: 2018 / 10 / 19
点击次数: 386
1、 preparation before peening1) the size and surface roughness before spring-shot blasting should meet the requirements of the pattern, except for special instructions (if it is necessary to reprocess the shot blasting surface).2) the spring shall complete the prescribed heat treatment before shot peening.3) the non-destructive test of the spring shall be completed before the shot peening treatment, or after the shot peening if there is special requirement.4) the surface of the spring to be sprayed should be clean, dry and free of oil.2、 treatment after shot peening1) the heating temperature of the spring parts shall not exceed 250~E, and the heating temperature of the spring parts shall not exceed 400~C for stainless steel.2) the spring after shot peening is allowed to be modified mechani...
作者: Daisy
发布时间: 2018 / 10 / 18
点击次数: 369
With the rapid development of technology, spring's figure is everywhere, playing an irreplaceable role in all walks of life.How to use the properties of the spring itself according to local conditions will be today's small talk about the content.Spring measuring functionWe know that, within the elastic limit, the extension (or contraction) of the stretching spring, compression spring, torsion spring, bending spring, spring and spiral spring is proportional to the force.A spring scale is made from the property of a spring.Spring compression functionObserving various electrical switches, it is found that one of the two contacts of the switch must have a spring in the head to ensure that the two heads are in close contact and conduct well.If the contact is not good, the resistance at ...
作者: Daisy
发布时间: 2018 / 10 / 18
点击次数: 276
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 fracture.Iii. Tensile spring fatigue fractureSpring fracture under cyclic loading.Iv. Hydrogen embrittlement, cadmium embrittlement and black embrittlement:Brittle break due to high content of impurit...
作者: Daisy
发布时间: 2018 / 10 / 17
点击次数: 289
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 dark brown.The color depends on the surface state of the spring, the chemical composition of the spring material and the oxidation process.The methods of oxidation treatment include alkaline oxidation...
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