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A preparation process for ultra-high vanadium high-speed steel pressure rollers for making metal corrugated boards

A preparation process and corrugated board technology are applied in the field of preparation process of ultra-high vanadium high-speed steel pressing rolls for making metal corrugated boards, which can solve the problem that the hardening depth of deep-hole type cannot be guaranteed, the surface quality and plate quality are affected, and the It does not meet the green environmental protection policy and other problems, and achieves the effect of avoiding poor bonding, improving service life and low hardness drop.

Active Publication Date: 2020-02-04
江苏凯达重工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional corrugated plate rolls are made of forged steel, which cannot guarantee the hardening depth of the deep hole type, and the wear of the pressing type is inconsistent, which affects the surface quality and shape quality
Traditional forged steel materials have to go through multiple processes such as smelting, reduction, degassing, casting, annealing, forging, quenching and tempering, quenching, tempering, etc. The energy consumption is large, the process pollution is serious, and the cost is high, which does not meet the national pollution control requirements. Anti-pollution green environmental protection policy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation process of the ultra-high vanadium high-speed steel roll for making metal corrugated board of the present embodiment comprises the following steps:

[0024] Step 1: Determine the chemical composition: the chemical composition of the outer layer, middle layer, and roll neck of the ultra-high vanadium high-speed steel pressure roll used to make metal corrugated boards is: outer layer chemical composition C: 3.0-3.6%; Si: 0.5 -1.5%; Mn: 0.3-0.5%; Cr: 2.0-4.0%; Mo: 3.0-5.0%; V: 11.0-13.0%; Co: 0.3-0.5%; ;S≤0.03%;Interlayer chemical composition C:1.0-1.5%;Si:1.0-1.5%;Mn:0.5-1.6%;Cr≤0.3%;Mo:0.2-0.5%;Ni:0.5-1.6%; Roll neck chemical composition C: 2.5-2.8%; Si: 2.0-3.0%; Mn: 0.5-1.0%; Cr≤0.2%; Mo: 0.1-0.4%; Ni: 1.5-2.0%; The amount is Fe and a small amount of residual elements;

[0025] Step 2: pouring; centrifugal pouring with low gravity multiple speed, high temperature pouring at 1500°C, adding 3-4mm thick O-shaped glass slag on the surface of the molten ir...

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Abstract

The invention discloses a preparation technology for an ultrahigh-vanadium high-speed steel compression roller for manufacturing a metal corrugated sheet. The preparation technology comprises the steps that firstly, chemical components are determined, wherein the chemical components include chemical components used for manufacturing an outer layer, a middle layer and a roller neck of the ultrahigh-vanadium high-speed steel compression roller for manufacturing the metal corrugated sheet; secondly, pouring is carried out, wherein centrifugal pressure casting is adopted, a molten steel antioxidant is adopted in the pouring process for fully covering the molten iron surface, a ceramic filtering net is used for filtering wee non-metallic inclusion and incomplete-fusion alloy oxide particles inmolten steel; and thirdly, heating treatment in a cold opening box is carried out, wherein roller bed rough turning is carried out on the cold opening box, medium-temperature treatment is carried outat 800 DEG C-850 DEG C, heat preservation is carried out for 5 h, and air cooling is carried out to obtain the normal temperature. According to the preparation technology, through centrifugal castingmolding and special medium-temperature treatment, ultrahigh-vanadium high-speed steel can be obtained; the problem is low in hardness fall, the hole type surface quality is smooth, environment pollution can be reduced in the preparing process, 30% of production cost can be reduced, and the service life can be prolonged by 80%.

Description

technical field [0001] The invention relates to a preparation process of an ultra-high vanadium high-speed steel pressure roller for making metal corrugated boards. Background technique [0002] Corrugated sheet, also known as profiled sheet, is a variety of wavy profiled sheets that are formed by cold-rolled color-coated sheet / galvanized sheet through cold bending. Corrugated board has the characteristics of light weight, high strength, rich color, quick and convenient construction, earthquake resistance, fire protection, and rain resistance. Wall and exterior wall decoration. The traditional corrugated plate rolls are made of forged steel, which cannot guarantee the hardening depth of the deep hole type, and the wear of the pressing type is inconsistent, which affects the surface quality and shape quality. Traditional forged steel materials have to go through multiple processes such as smelting, reduction, degassing, casting, annealing, forging, quenching and tempering, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/16B22D19/08B22D13/02C22C38/22C22C38/24C22C38/30C22C38/32C22C38/02C22C38/04C22C38/44C22C38/58C22C38/56
CPCB22D13/02B22D19/08B22D19/16C22C38/002C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C22C38/32C22C38/44C22C38/56C22C38/58
Inventor 许健周国祥时海峰
Owner 江苏凯达重工股份有限公司
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