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The quality of high-quality rolling mill rolls cannot be “compromised”



In recent years, the high-speed steel rolls used in more than 100 sets of bar rolling mills at home and abroad have been favored by the steel rolling industry for their good wear resistance and high product dimensional accuracy, which has enhanced the ability of roll manufacturers to develop this new product. The enthusiasm not only promotes the technological progress of the roll manufacturing industry, but also breaks the traditional pattern of roll varieties that has been maintained for decades. Its further development will promote the gradual improvement of the rolling mill operation rate and the continuous improvement of the rolling process.


However, once a product is recognized by the society, it is often accompanied by the phenomenon that the fake is filled with the real and the inferior is filled with the good, and the high-speed steel roll is no exception. Some roll companies describe the improved infinite chilled roll as a semi-high-speed steel roll and sell it to users; some roll companies seize the market at a very low price when purchasing, but the products provided to users are due to the addition of total alloys. Insufficient amount, the roll performance index is low and the wear resistance is poor. The use of multiple rolling lines has not reached the ideal index agreed by the two parties, and the rolling amount is not even as good as that of ordinary cast iron rolls. This not only caused certain economic losses to both the supply and demand sides, but also directly affected the expectations of roll users for an emerging product.


“Whoever has high-quality product quality will grasp the lifeblood of the enterprise’s survival!” The quality of high-speed steel rolls must not be “discounted”.


In order to continuously improve and improve the product quality of high-speed steel rolls, the product varieties and application fields are more serialized, the production and delivery cycle time of the rolls is reasonable, and the technical guidance during the use of the products is closer to the rolling process. Features of the line and requirements of users In one.


Firstly, the high-speed steel rolls are serialized according to the characteristics of the rolling material and the use characteristics of the rolling mill. Secondly, the composition of the high-speed steel rolls is optimized to avoid the problem of segregation of components in centrifugal production, and the heat treatment process of the high-speed steel rolls is improved to enhance the uniform hardness of the rolls. Spend. Through the optimization of the composition and the improvement of the heat treatment process, the uniformity of the surface hardness of the roll body is not more than 3HSD, the cutting performance of the roll is significantly enhanced, the hardness drop of the working layer is not more than 1HSD, the stability of the use of the roll is greatly enhanced, and the comprehensive service life of the roll is the same as the previous one. Compared with similar products, it can be extended by about 20%, but the sales price of the roll has not increased, which has won the favor of users.


The way for the rolling mill to get out of the predicament is to reduce the production cost and increase the enterprise benefit on the one hand; on the other hand, it is to maximize the surface quality of the rolled material and enhance the market competitiveness of the rolled material. The use of high-quality high-speed steel rolls can not only significantly improve the surface quality of the rolled material and enhance the market competitiveness of the products, but also have a long service life of the rolls, fewer roll changes, and a high rolling mill operation rate. The daily output can usually be increased by about 10%. Under normal circumstances, the control rate of negative difference stability can be increased by 1%, which greatly improves the yield of finished products and increases the efficiency of enterprises.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_btn title=”About LMM GROUP” link=”|target:_blank”][vc_column_text css=”.vc_custom_1649296177864{margin-top: 50px !important;}”]friendship Link:

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

LMM Main product series

Core technology products:

  • magnesia carbon brick
  • slide gate plate
  • graphite electrode

Core technology products:

  • Hss roller
  • cast steel rolls
  • tungten carbide ring roller

Core technology products:

  • copper mould tube
  • copper mould plate
  • assembly & cooling jackts

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