The development process of alloy structural steel (GB 3077-88)
Alloy structural steel is one of the important structural materials in engineering and plays an important role in the development of Chinas steel industry. In 1988, an alloy structural steel variety was added, and it was also the basis of the development of the countrys alloy structural steel industry.
GB3077-88, put forward in 1988, is a national basic standard for alloy structural steel. It divides alloy structural steel into several categories and sets technical conditions accordingly. It can give comprehensive consideration to state-owned enterprises, military enterprises and medium-to-high-end alloy structural steel varieties and make the technical standard system of alloy structural steel more complete. With the development of national economy, the demand of alloy structural steel has also been further improved.
There are three major advantages of alloy structural steel: It has excellent performance and good toughness, fatigue resistance and wear resistance; It has high strength and low modulus of elasticity; It has good metallurgical properties and is not easy to be affected by many factors. It can effectively solve the problem of brittle fracture.
It is worth noting that, alloy structural steel GB3077-88 is the earliest alloy structural steel standard in the country, the first alloy structural steel variety was rolled out from the 1580 hot strip mill in 1978, then the rolling standard of alloy structural steel was established by steel enterprises compulsory, and then put forward the relevant alloy structural steel (GB3077-88). On this basis, new varieties of alloy structural steel have been developed.
In the mid-1980s, special steel enterprises developed alloy structural steel varieties such as 15CrMo and 20CrMo respectively. In 1987, the State Quality Supervision Bureau issued a document, inviting special steel enterprises to participate in the formulation of national standards. It was in this context that a standard of alloy structural steel type(GB3077-88) was established.
Since the formulation of GB3077-88, alloy structural steel has made great progress. The quality of steel produced by related enterprises has been greatly improved, and the production scale has also been expanded. In particular, the production of 15CrMo and 20CrMo, the two main varieties of alloy structural steel under the standard of GB3077-88, has been greatly improved. The product shape is varied and the precision is improved.
At present, with the further deepening of reform and development in the steel industry, the quality of alloy structural steel has been further improved. With the continuous optimization and integration of the national steel industry, the competitiveness of alloy structural steel has also been further improved, setting a higher benchmark for the development of enterprise. As a result, higher requirements of quality, process and performance of alloy structural steel have also been continuously created.
Today, the alloy structural steel developed under the standard of GB3077-88 is widely used in various fields and industries, providing reliable protection and protection for the whole engineering project. It can be said that alloy structural steel (GB3077-88) has played an important role in Chinas steel industry and will continue to promote the development of Chinas steel industry and related engineering industry.
