Centrifugal metal roll ring and manufacturing process thereof

A manufacturing process and technology of centrifugal rollers, applied in the field of metal centrifugal roller rings and their manufacturing processes, can solve the problems of energy saving and high efficiency, low production efficiency and high production cost, and achieve improved thermal crack resistance, improved surface quality, The effect of surface quality improvement

Active Publication Date: 2016-04-06
江苏凯达重工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The horizontal and vertical roller rings commonly used in the rolling of large and medium-sized H-shaped steel, railway rails, and elevator guide rail universal frames at home and abroad are generally made of high-chromium cast iron and high-carbon semi-steel. Due to the complicated process, the production cost of this type of material is high. The actual production efficiency is low and cannot meet the energy-saving and high-efficiency requirements of cash

Method used

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  • Centrifugal metal roll ring and manufacturing process thereof
  • Centrifugal metal roll ring and manufacturing process thereof

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Embodiment 1

[0025] See figure 1 and figure 2 , a metal centrifugal roller ring in this embodiment, comprising inner layer 1 and outer layer 2 of different materials; the chemical composition of inner layer 1 is: C: 0.80-1.20%; Si: 1.00-2.00%; Mn: 0.50- 1.50%; P≤0.03%; Ni: 0.20~1.00%; Mo≤0.20%; 1.50%; Mn: 0.80~1.50%; P≤0.10%; S≤0.03%; Cr: 12.00~18.00%; Ni≥0.50%; Mo: 0.20~1.50%, the rest is Fe. The matrix structure of the outer layer 2 is: tempered sorbite + martensite + fine grained carbide; the fine grained carbide is Cr 7 C 3 and M 2 c. The surface hardness of the metal centrifugal roller ring is 65-75HSD, and the uniformity of the plane and side hardness of the outer layer 2 of the roller ring is ≤1HSD; The tensile strength of the inner layer ≥ 550MPa, the tensile strength of the inner layer ≥ 700MPa. See figure 1 and figure 2 A ring of assembly threaded holes 11 are evenly distributed on both ends of the inner layer 1; annular step grooves 12 are arranged on both ends of the...

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Abstract

The invention discloses a centrifugal metal roll ring and a manufacturing process thereof. The centrifugal metal roll ring comprises an inner layer and an outer layer which are made of different materials. The inner layer comprises 0.80%-1.2% of C, 1.00%-2.00% of Si, 0.50%-1.50% of Mn, not larger than 0.03 of P, 0.20%-1.00% of Ni, not larger than 0.20% of Mo, not smaller than 0.04% of Mg and the balance Fe. The outer layer comprises 2.00%-3.00% of C, 0.50%-1.50% of Si, 0.80%-1.50% of Mn, not larger than 0.10% of P, not larger than 0.03% of S, 12.00%-18.00% of Cr, not smaller than 0.50% of Ni, 0.20%-1.50% of Mo and the balance Fe. Compared with high-chromium cast iron and a high-carbon semi-steel roll ring which are obtained through inblock casting and centrifugal casting, by the adoption of the centrifugal metal roll ring, precious metal is saved, production cost is lowered by 18% to 22%, the roll ring is easy to cut, and the matrix organization, impact toughness, wear resistance and heat crack resistance can be improved greatly.

Description

technical field [0001] The invention relates to a metal centrifugal roller ring and its manufacturing process. Background technique [0002] The horizontal and vertical roller rings commonly used in the rolling of large and medium-sized H-shaped steel, railway rails, and elevator guide rail universal frames at home and abroad are generally made of high-chromium cast iron and high-carbon semi-steel. Due to the complicated process, the production cost of this type of material is high. The actual production efficiency is low, and it cannot meet the energy-saving and high-efficiency requirements of cash. Contents of the invention [0003] The first object of the present invention is to provide a metal centrifugal roller ring that can reduce production cost, is easy to chip processing, and has greatly improved matrix structure, impact toughness, wear resistance, and thermal crack resistance. [0004] The technical solution to achieve the first purpose of the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/08C22C38/12C22C38/56C22C38/44C22C37/10B22D13/00B22D19/16C21C7/064C21D1/18C21D1/28C21D1/26C21D9/38C21D9/40
CPCB22D13/00B22D19/16C21C7/064C21D1/18C21D1/26C21D1/28C21D9/38C21D9/40C22C37/08C22C37/10C22C38/002C22C38/02C22C38/04C22C38/08C22C38/12C22C38/44C22C38/56
Inventor 许健许亚南蒋志芳
Owner 江苏凯达重工股份有限公司
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