Year1
- 产品规格：
- 齐全
Chemical composition
Carbon: .~
Silicon: .~
Manganese.~
Sulfur:
Phosphorus:
Chromium:
Nickel
Copper:
Mechanical properties
Tensile strength:
Yield strength:
Elongation ():
Reduction of area ( ):
Hardness: hot rolling, cold drawing + heat treatment,
Heat treatment process
Heat treatment specification: quenching ℃℃, oil cooling and tempering ℃℃ (for special needs, 3℃).
Metallographic structure: tempered troostite.
Delivery status: Hot-rolled steel is delivered in a heat-treated or non-heat-treated state, and cold-drawn steel is delivered in a heat-treated state.
Basic characteristics and applications of domestic spring steel
.,,: It can obtain high strength, hardness and yield ratio, but has small hardenability, poor heat resistance and can withstand dynamic load and fatigue load. Low capacity is widely used, but it is mostly used for small springs where the operating temperature is not high or for larger springs that are not important. Such as springs used in automobiles, tractors, railway vehicles and general machinery
The composition is simple, and the hardenability, comprehensive mechanical properties, decarburization and other process properties are better than carbon steel, but they are sensitive to overheating and have temper brittleness. It is easy to crack after quenching, the price is low, and the dosage is large. It can manufacture various small-section flat springs, round springs, springs, etc. It can also manufacture valve springs, spring rings, shock absorbers, clutch reeds, brake springs, etc.
.,, high silicon content (the upper limit is up to .), high strength and good elasticity. Good anti-tempering stability. Easy to decarburize and graphitize. Hardenability is not high. The main type of spring steel has a wide range of uses. Manufacture of various springs, such as leaf springs, coil springs for automobiles, locomotives, tractors, cylinder safety valve springs and some important springs that work under high stress and severely worn springs.
Because B contains boron, its hardenability can significantly improve the front and rear suspension springs and auxiliary springs of light and medium-sized cars. B is a steel grade independently developed in my country. Its hardenability, comprehensive mechanical properties and fatigue properties are better than those of steel. It is mainly used to manufacture leaf springs for medium and small cars. It has good use effect and can also be used to manufacture other leaf springs and coil springs with medium cross-section sizes.
3. High strength spring steel. High hardenability and good heat treatment process performance. Because of their high strength, important large-scale springs with large loads should be processed in time to eliminate internal stress after rolling the springs. It can be used to manufacture steam turbine seal springs, adjusting springs, condenser support springs, high-pressure water pump disc springs, etc. Steel also makes very important springs, such as conventional weapon retrieval hook springs and crusher springs.
. The outstanding advantage is good hardenability, as well as good thermal processing properties, comprehensive mechanical properties, and anti-decarburization properties. It is also used for large springs, such as large leaf springs and coil springs for automobiles and motorcycles.
.It has the highest hardenability among all existing spring steels. The mechanical properties and anti-tempering stability are also good for the super large springs used in large civil construction, heavy vehicles, machinery, etc. The thickness of the steel plate can reach more than 3, and the diameter of the round steel can exceed 3.
. A small amount of vanadium improves the elasticity, strength, yield ratio and elastic resistance, refines the grains and reduces the tendency of decarburization. The carbon content is small, and the plasticity and toughness are better than other spring steels. Various important coil springs with high hardenability and good fatigue performance, especially suitable for springs with high working stress amplitude and strict fatigue performance requirements, such as valve springs, injector springs, cylinder expansion rings, safety valve springs, etc.
.High hardenability ratio, other similar performance to larger leaf springs, coil springs, torsion springs, etc.
.High strength and heat-resistant spring steel. Hardenability is very good. The high temperature resistance to relaxation and hot processing properties are also very good. Heat-resistant springs with working temperatures below ~, such as turbine main steam valve springs, steam seal spring sheets, boiler safety valve springs, boiler disc valve springs, etc.
WhatsApp
