HOT INFORMATION / More
1
2018 - 04 - 18
We can look at the relationship between the force applied to a spring and its resulting displacement. Again, there are three classes of springs: linear (or constant rate) springs, variable rate springs, and constant force springs.Linear springsLinear springs obey Hooke’s Law (F=k*x), which means that the force needed to extend or compress such a spring by distance x is proportional to the distance, as long as the force doesn’t exceed the elastic limit of the spring. Torsion springs obey an analogous version of Hooke’s Law (F=k*θ, where θ is an angle). In both cases, k is the spring rate, and i...
2
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...
3
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 of ...
4
2018 - 08 - 24
We can look at the relationship between the force applied to a spring and its resulting displacement. Again, there are three classes of springs: linear (or constant rate) springs, variable rate springs, and constant force springs.Linear springsLinear springs obey Hooke’s Law (F=k*x), which means that the force needed to extend or compress such a spring by distance x is proportional to the distance, as long as the force doesn’t exceed the elastic limit of the spring. Torsion springs obey an analogous version of Hooke’s Law (F=k*θ, where θ is an angle). In both cases, k is the spring rate, and i...
5
2018 - 09 - 08
(1) heat treatment technology for strengthening springs.1) protective atmosphere heat treatment. In our country, protective atmosphere heat treatment is adopted in spring, oil quenched and tempered steel wire and toughened steel whose wire rod is less than 15mm. Heat treatment in protective atmosphere can remove surface decarbonization and oxidation and improve the surface quality of materials.2) induction heating or protective atmosphere induction heating heat treatment. This process is usually carried out on the wire before forming the coil spring. Some spring factories combine heat treatmen...
6
2018 - 09 - 20
The purpose of mold spring is to take off material, press material, the strength of the spring, which is related to whether the mold production is smooth, whether the product is qualified.Spring force is small, may cause the product to be out of shape, the mold does not take off the material, the product is bad to take out from the mold inside, the belt material, the knife edge, punch easy to wear and so on each kind of question.Mold spring according to different production times, compression amount selected, the larger the spring life, the shorter die life, of course, the broken spring can be...
7
2018 - 09 - 30
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...
8
2018 - 10 - 17
Washing method according to the surface state:General considerationsWhen washing, please pay attention not to scratch the surface to avoid using the bleaching ingredients and the cleaning solution containing abrasive agent, steel ball (brush roller ball), grinding tools, etc. In order to remove the cleaning solution, wash the surface with clean water at the end of washing.Surface condition and washing methodDust and dirt are washed with soap, a mild detergent, or warm waterLabel and film with warm water, weak detergent to scrubThe binder ingredient is alcohol or organic solutionUse a mild clot...
9
2018 - 10 - 29
Each circle is formed into a tightly closed spiral ring or a pitch ring, which extends outwards when subjected to external forces and maintains a force of contraction towards the middle.There are many kinds of spring hooks: English hook, German hook, earring hook, fishtail hook, etc.(1) free length: (a) total length, (b) total length of the ring, and (c) length inside the hook ring.(2) control diameter :(a) outside diameter, (b) inside diameter, (c) inside diameter of casing.(3) steel wire size "wire diameter".(4) materials (type, grade).(5) winding number :(a) total winding number a...
NEW INFORMATION / More
1
2018 - 07 - 28
Detection of geometric size of 6.1 compression springs6.1.1 spring material diameter detection: check the spring material diameter generally with vernier caliper or micrometer. In particular, attention should be paid to the inspection of springs with small winding wires and annealed alloy wires wrapped by automatic spring coiling machines.6.1.2 spring free height or free length detection: the spring is generally placed in horizontal position measurement. It is allowed to be placed in erect position only when the self weight has no obvious effect on the height or length of the spring when it is...
2
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...
3
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...
4
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...
5
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...
6
2018 - 09 - 29
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...
7
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 ...
8
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...
9
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,...
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Metal spring plays an important role in safety valve

日期: 2018-09-29
浏览次数: 327
Daisy

The spring relief valve is mainly composed of spool, seat, stem, spring and adjusting screw.The relief valve mainly USES spring force to press the spool on the seat.When the boiler pressure exceeds the pressure exerted by the spring on the upper part of the spool, the spool and stem are lifted and steam is discharged.When the boiler pressure is lower than the spring pressure acting on the upper part of the spool, the spool falls on the seat and the boiler stops discharging steam.Metal spring plays an important role in safety valve

The spool is a cone with a slight protrusion around the edge of the spool.When the steam opens the valve core, the edge of the valve core is also affected by steam pressure, which makes the whole area of action increase suddenly, and the valve opens when the valve stops.When the drop force is reduced, the steam force suddenly decreases, making the valve core close once and preventing the valve core from beating repeatedly.The main parameters of the spring relief valve are opening pressure and exhaust capacity, which depends on the size of the seat and the lifting height of the spool.Due to different elevations, it can be divided into three types: micro-open, medium-open and full-open safety valves.

The spring safety valve is compact, small and light.Good tightness, and easy to adjust, can withstand vibration, leakage phenomenon is rare.Therefore, sensitive and reliable.It is the most widely used one.


Relevant recommendations
2020 . 01 . 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...
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...
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...
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 original stat...
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