Oil Tempered Spring Steel Wire ASTM a 229 DIN 17223-2 En 10270-2

With advanced technology and customer-responsible service concepts, we have served many customers and accumulated rich production experience of 72A carbon spring steel wire factory, 3.5MM Oil Tempered Spring Steel Wire, Valve steel wire EN10270-2. Our main objectives are to provide our customers worldwide with good quality, competitive price, satisfied delivery and excellent services. Since we have an R&D team with strong innovation capabilities in the industry, we have always adhered to independent technological innovation to build an international high-level R&D platform. We're absorbing the essence of many companies, relying on science and technology, surviving on quality, and growing through reputation. In recent years, we have followed the trend of the market and launched timely excellent products and have gained a good reputation in the industry.

Quick Details

Steel Grade: 65mn 60si2mna 55crsi(SAE9254V) 50crva

Standard: AISI, ASTM, BS, DIN, JIS

Product name: super supplier of high carbon spring steel wire

Surface: bright

Tensile strength: 1340mpa-2230mpa

Usage: Valve springs, valve springs, clutch springs, coil springs, spring rails, car springs, etc.

Certificate: ISO 9001:2008

Package: in coil

Diameter: 0.5mm-10mm

Spring steel wire Uses:

Spring wire is mainly used in locomotives, vehicles, automobiles, tractors, aircraft and a variety of coil spring spring.

Hot forming spring heat treatment diameter or plate thickness greater than 10-15mm large spring, multi-purpose hot-rolled wire drawn wire rod or steel plate made of.

Processing and heat treatment: the first spring steel wire heated to a temperature higher than the normal quenching temperature of 50-80 ℃ under the conditions of hot-rolled forming, and then quenched in the tempering tempering, to obtain excellent flexibility and fatigue strength of the tempering sorbite. Spring steel wire quenching heating should be used with less oxygen or no oxidation equipment such as salt bath furnace, protective atmosphere furnace, to prevent oxidation decarburization.

Spring steel wire after heat treatment should also be shot peening, strengthen the surface, resulting in residual compressive stress, improve fatigue strength.

Hot-rolled spring steel wire used in the process are: flat steel cut -> heat bending forming after heat quenching + tempering + shot peening -> packaging.

Cold forming spring heat treatment diameter of less than 8mm of the spring, cold-rolled steel wire commonly used cold-rolled forming. Cold-drawn steel wire manufacturing process and follow-up heat treatment, mainly in the following three categories:

① lead bath cold drawn steel wire drawing the first three consecutive wire drawing, the total deformation of 50%, followed by heating to Ac3 above the temperature of its austenitizing, followed by 450-550 ℃ lead bath in the isothermal treatment, Body into sorbite tissue. Yield strength of 1600Mpa, cold roll forming, annealing at 200-300 ℃ stress can be.

② oil quenching and tempering steel wire drawing to size, the oil quenching and tempering. The strength of such wire is inferior to that of lead-treated steel wire, but the performance is uniform and the cost is low. After cold roll forming, a stress-relieving treatment is performed.

③ annealed steel wire drawing the wire to the required size, and then annealing. After the softening of the cold-rolled steel wire forming, subject to quenching after tempering in the temperature to get the required mechanical properties. Alloy elements in the spring wire in the main role is to improve the mechanical properties, improve process performance and to give some special properties (such as high temperature, corrosion resistance) and so on.

'Quality first' in mind, we work closely with our customers and provide them with efficient and professional services for Oil Tempered Spring Steel Wire ASTM a 229 DIN 17223-2 En 10270-2. What we can achieve is because no one takes the cause of intelligent technology more seriously and seriously than us! Our company has a professional management and sales team, we rely on stable quality and after-sales service to win the trust and praise of domestic and foreign merchants.