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A kind of v-type icdp roll and its production process

A production process and roll technology, applied in the field of V-type ICDP roll and its production process, can solve the problems of low wear resistance and production efficiency, and achieve the effects of refining the structure of castings, inhibiting grain expansion, and improving the ability to resist accidents

Active Publication Date: 2018-01-16
TANGSHAN IRON & STEEL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low wear resistance of the traditional nickel-chromium-molybdenum rolls used on the finishing stand has become a bottleneck restricting the production efficiency of the entire rolling line

Method used

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  • A kind of v-type icdp roll and its production process
  • A kind of v-type icdp roll and its production process
  • A kind of v-type icdp roll and its production process

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Experimental program
Comparison scheme
Effect test

Embodiment

[0044] Embodiment: The concrete process of the production technology of this plus V type ICDP roll is as follows.

[0045] (1) Produce 9 pieces of Φ700×1880 plus V-shaped ICDP rolls for the hot plate line of a steel factory. The 3T and 10T medium frequency induction furnaces are respectively used to smelt the working layer of the V-shaped ICDP roll and the molten iron at the core of the roll.

[0046] The chemical composition of the working layer of the 9 plus V-shaped ICDP rolls produced according to this process is shown in Table 1.

[0047] Table 1: Chemical composition of the working layer of the rolls in each embodiment (wt%)

[0048]

[0049] In Table 1, the balance is iron and unavoidable impurity elements.

[0050] The chemical composition of the working layer of the 9 plus V-shaped ICDP rolls produced according to this process is shown in Table 2.

[0051] Table 2: Chemical composition of the roll core of each embodiment (wt%)

[0052]

[0053] In Table 2, t...

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Abstract

The invention discloses a V-shaped ICDP roll and its production process. The material of the working layer is V-shaped high-nickel-chromium infinitely chilled cast iron, and the material of the core is high-strength alloy ductile iron; the material composition of the working layer is The mass percentage content is: C 3.0~3.4%, Si 0.6~1.2%, Mn 0.4~1.0%, P≤0.08%, S≤0.03%, Ni 4.0~4.5%, Cr 1.6~2.0%, Mo 0.2~0.6 %, V 0.7~0.8%, the rest is iron and unavoidable impurity elements. The difference between this ICDP roll and the existing improved ICDP roll strengthened by V and Nb is that only V element is added for strengthening; the hardness of VC and VN is higher than that of NbC, NbN and Nb, The mixed carbide of V has higher wear resistance and hardness than the existing V and Nb type ICDP rolls, which ensures the matching of racks before and after finishing rolling. The ICDP roll has been used by steel rolling enterprises, and has excellent use effect, and the wear resistance and accident resistance of the roll are significantly improved compared with ordinary rolls.

Description

technical field [0001] The invention relates to a compound roll, especially a V-shaped ICDP roll and its production process. Background technique [0002] In the past few decades, with the continuous development of steel rolling technology and the continuous improvement of product quality requirements, the performance requirements of rolling mill rolls have also been continuously improved. Roll performance is mainly reflected in high wear resistance, longer rolling life and higher safety. High-speed steel (HSS) rolls are gradually replacing the high-chromium composite cast iron rolls of the hot continuous rolling finish rolling front frame with their high wear resistance, surface roughness resistance, and good performance in terms of strength and toughness. The surface quality is better than that rolled by high chromium cast iron rolls. The good surface quality of high-speed steel rolls is enough to extend the service life of the rolls. After finishing rolling, there is no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B27/02C22C38/56
Inventor 黄明李元春肖连华张杰刘宇刘宝存刘双喜李红宇高玉章盛强赵海军曹瑞荣
Owner TANGSHAN IRON & STEEL GROUP