Liaoning Province has now developed and constructed new industrial parks such as the Dalian Huaikou Chemical New Material Industrial Base, Huludao Polyurethane Industrial Base, Fuxin Fluorine Chemical Industry Park, and other new chemical materials-led industries. Liaoning Tianhe Fine Chemicals Co., Ltd. independently researches and develops the telomerization method to produce fluorocarbons. Its production capacity has been expanded from 200 tons per year to 1,000 tons. Currently, only three companies, namely DuPont, Daikin, and Asahi Glass, have mastered this. Technology; Panjin Zhongrun's 1500-ton/year polyetheretherketone project adopts domestic independent technology, the product fills domestic gaps, 3000 tons/year aramid project products have high added value and great demand potential; Jinzhou titanium industry has complete independent knowledge. The chlorination titanium dioxide production technology of property rights leads the development of Chinese titanium industry.
According to reports, in February this year, the Liaoning government issued the "Opinions on Accelerating the Development of Emerging Industries", which clearly defined the importance of accelerating the development of emerging industries as an important task in economic restructuring, advanced equipment manufacturing, new energy and new materials, etc. 9 Emerging industries will focus on future development and provide support in areas such as financial resources. In May, the provincial government issued the "Implementation Opinions on the Efforts to Eliminate Outdated Production Capacity" and continued to encourage the optimization of the structure and accelerate industrial upgrading and technology upgrading.
Technological innovation strongly promoted the development of emerging industries and accelerated the pace of industrial restructuring in Liaoning Petrochemical. The output value of Liaoning Petrochemical and the output of major products increased significantly year-on-year, and the economic returns of the industry hit a record high, exceeding the levels before the international financial crisis. Petroleum and Chemicals The market is generally stable and production and sales are basically smooth. It is expected that the industry will achieve an industrial added value of 148 billion yuan this year, and the nationwide sales revenue will continue to move forward.
Cold drawn steel bar is produced by hot rolled steel bar or wire rod to get smooth surface, more precision size, higher mechanical properties, which improves machining characteristics. It can also get various sections and sizes. So cold drawn steel bar is a better choice for machining users.
According to different steel grade, the production line is usually different. The Basic production line is as below:
For high carbon steel or alloy steel bars, to avoid the cracks in inner or surface, the bars are usually required to be annealed before cold drawing.
To get different mechanical properties or hardness depending on final usage, the cold drawn bars will also be heat treated such as annealed, normalized or quenched and tempered(Q&T).
For CNC machines usage, to get much more precision sizes or much more better surface roughness for chrome plating, the cold drawn steel bars can also be centerless ground or polished.
We have more advantages on producing cold drawn steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of cold drawn steel bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdbrightsteelbar.com