Composite roller for high vanadium high speed steel and its production process

A composite roll and production process technology, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of complex production process, large power consumption, component segregation, etc., to achieve good wear resistance, improve wear resistance, close density effect

Inactive Publication Date: 2005-06-29
HENAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to propose a composite roll wear-resistant layer material - high-vanadium high-speed steel and the production process of the roll, improve the toughness and wear resistance of the roll, and solve the problem of centrifugal casting method prone to component segregation, CPC method, ESR method The production process is complicated, the power consumption is large, and the cost is high

Method used

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  • Composite roller for high vanadium high speed steel and its production process

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Effect test

Embodiment 1

[0036] In this embodiment, the roll is divided into a roll core and a roll wear-resistant layer. The roll core is prefabricated with a low-alloy steel material (ZG35CrMo) with good toughness; the roll wear-resistant layer is made of high-vanadium high-speed steel material, and the high-vanadium high-speed steel material The main element content is: C: 1.8%, V: 7%, Cr: 4%, Mo: 3%, Ni: 0.5%, and the balance is iron.

[0037]The production process of the present invention is an induction heating sequential solidification and crystallization method. As shown in the drawings, the casting mold is divided into three sections, which are made of different molding sands. The lower part 7 is water glass sand, the middle part 6 is 80% water glass sand and 20% insulation material, and the upper part 5 is 50% water glass. Sand and 50% insulation material, the base 10 of the mold is provided with a cooling water inlet pipe 8 and a drain pipe 9.

[0038] The specific thermoforming process of...

Embodiment 2

[0041] In this embodiment, the roll is divided into a roll core and a roll wear-resistant layer. The roll core is prefabricated with a low-alloy steel material (ZG40Cr) with good toughness; the roll wear-resistant layer is made of high-vanadium high-speed steel material, and the high-vanadium high-speed steel material The main element content is: C: 2.8%, V: 9%, Cr: 4.5%, Mo: 3%, Ni: 1%, and the balance is iron.

[0042] The production process of the present invention adopts an induction heating sequential solidification and crystallization method. As shown in the drawings, the casting mold is divided into three sections, which are made of different molding sands. The lower part 7 is water glass sand, the middle part 6 is 80% water glass sand and 20% insulation material, and the upper part 5 is 50% water glass. Sand and 50% insulation material, the base 10 of the mold is provided with a cooling water inlet pipe 8 and a drain pipe 9.

[0043] Concrete thermoforming process of ...

Embodiment 3

[0046] In this embodiment, the roll is divided into a roll core and a roll wear-resistant layer. The roll core is prefabricated with a medium carbon steel material (ZG35) with good toughness; the roll wear-resistant layer is made of high-vanadium high-speed steel material, and the high-vanadium high-speed steel material The content of the main elements is: C: 3.4%, V: 11%, Cr: 5%, Mo: 2%, Ni: 1.2%, and the balance is iron.

[0047] The production process of the present invention adopts an induction heating sequential solidification and crystallization method. As shown in the drawings, the casting mold is divided into three sections, which are made of different molding sands. The lower part 7 is water glass sand, the middle part 6 is 80% water glass sand and 20% insulation material, and the upper part 5 is 50% water glass. Sand and 50% insulation material, the base 10 of the mold is provided with a cooling water inlet pipe 8 and a drain pipe 9.

[0048] Concrete thermoforming ...

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Abstract

The invention offers the high V super-speed steel complex roller and its producing craft. The roller includes roller heart and roller shell, the roller heart uses low metal alloy steel or middle carbon steel to produce, the shell uses high V super-speed steel, whose main element is : C: 1.8--3.5A%, V: 7--12%, Cr: 4--5%, Mo: 2--4%, Ni: 0.5--1.5%, other is Fe. The producing craft is: melt and cast the heart and shell by responding heat way. The roller in the invention has good whet feature, high rate of feature and price, using safely. Fine roller, high strength of combination, no crush in use; it can reduce the stop times. It efficiently increase the roller tenacity and whet feature, solve the problems in the heart leaving foundry, and solve the problems of complicated craft and high cost.

Description

Technical field [0001] The invention belongs to the main wear-resistant part of the steel rolling industry—roll technology, and mainly relates to a high-vanadium high-speed steel composite roll and a production process. Background technique [0002] The roll is a key wear-resistant part consumed in large quantities in steel rolling production, and its quality directly affects the quality of steel rolling, labor productivity and product profit. At present, the materials used to produce rolls mainly include: cast steel, alloy semi-steel, spherical graphite cast steel, chilled cast iron, infinite chilled cast iron, high nickel-chromium infinite chilled cast iron, alloy ductile iron, high chromium steel, high chromium Cast iron, high speed steel, hard alloy. Among these materials, high-chromium cast iron is recognized as a roll material with better comprehensive mechanical properties and wear resistance. Its structure is characterized by M7C3 carbide embedded on the matrix of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/02B22D19/16C21D6/00C22C38/08C22C38/12C22C38/18
Inventor 魏世忠刘亚民龙锐王守诚徐流杰倪锋李景韩张成新
Owner HENAN UNIV OF SCI & TECH
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