On November 14, Shanghai Diesel Engine Co., Ltd. (hereinafter referred to as Shangchai) held a National III Engine Product Promotion Conference in Fuzhou. At the meeting, the reporter learned that at present, more than 200 buses in Fuzhou have been using Shangchai’s National III engine.
It is reported that Shangchai now leads the China III engine market with multiple characteristics of its electronically controlled common-rail diesel engine. At the same time, Shangchai Power is the only domestic manufacturer capable of mass-producing heavy-duty, electric-controlled common-rail State III diesel engines, and is developing and producing diesel engines. Many valuable experiences have been accumulated in maintenance and other areas. Among them, the Shangchai Co., Ltd. series of electronically controlled high-pressure common-rail diesel engine with its distinctive features, wide applicability has become the first choice for domestic commercial vehicle companies.
Zhang Qi, deputy general manager of Shangchai told reporters: “The prospects of the State III market are broad, especially in the city bus market, Shangchai can do a great job. On the journey of using the State III engine to liberate the national commercial vehicle market, Shang Chai has a long The way to go is a long-term plan, and it is a long and hard road. I believe that Shangchai will be able to step out of the broader sky in the future and make greater contributions to the Chinese engine business."
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.
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.sdcolddrawnsteelbar.com