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Rare earth multicomponent micro-alloying high-chromium cast iron and uses thereof

A technology of micro-alloying, high-chromium cast iron, applied in metal extrusion, metal rolling, metal rolling, etc., can solve the problems of high cost of imported equipment, inability to meet production needs, unsatisfactory wear resistance and service life, etc. , to achieve the effect of good machining performance, improved thermal fatigue life, wear resistance and service life

Active Publication Date: 2007-08-08
JINAN JIN PIN MAGNETIC MATERIALS & DIVECES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems that the wear resistance and service life of the current domestic extrusion roller steel are not ideal, cannot meet the production needs, and the cost of imported equipment is too high, and provide a kind of steel with high thermal hardness, thermal strength, The thermal fatigue strength, wear resistance and service life are obviously improved, and the mechanical processing performance is good, which can meet the needs of extrusion rollers. Rare earth multi-element micro-alloyed high-chromium cast iron and its application

Method used

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  • Rare earth multicomponent micro-alloying high-chromium cast iron and uses thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The chemical composition of the cast iron contains 1.0-3.5 parts by weight of carbon, 8.0-26.0 parts of chromium, 0.5-4.5 parts of nickel, 0.15-2.0 parts of molybdenum, 0.5-2.0 parts of copper, 0.05-2.0 parts of aluminum, 0.05-2.0 parts of vanadium, 0.03-0.3 parts of rare earth and 0.005-0.20 parts of rare earth Silicon ≤ 0.5 part Manganese ≤ 0.7 part Sulfur ≤ 0.05 part Phosphorus ≤ 0.05 part The balance is iron.

Embodiment 2

[0049] The chemical composition of the cast iron contains by weight: 1.0-3.5 parts chromium 8.0-26.0 parts nickel 0.5-4.5 parts molybdenum 0.15-2.0 parts copper 0.5-2.0 parts aluminum 0.05-2.0 parts vanadium 0.03-0.30 parts titanium 0.03-0.30 parts Rare earth 0.005-0.200 parts Silicon: ≤0.5 parts Manganese: ≤0.7 parts Sulfur ≤0.05 parts Phosphorus ≤0.05 parts The balance is iron.

Embodiment 3

[0051] 1.0-3.5 parts chromium 8.0-26.0 parts nickel 0.5-4.5 parts molybdenum 0.1 5-2.0 parts copper 0.5-2.0 parts aluminum 0.05-2.0 parts vanadium 0.03-0.30 parts titanium 0.03-0.3 parts aluminum 0.05-2.0 parts rare earth 0.005-0.200 parts Silicon: ≤0.5 part Manganese: ≤0.7 part Sulfur ≤0.05 part Phosphorus ≤0.05 part The balance is iron.

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Abstract

The invention discloses a polyvalent microalloying high-chromium cast-iron and usage of rare earth, which comprises the following parts: 1.0-3.5% carbon, 8.0-26.0% chromium, 0.5-4.5% nickel, 0.15-2.0% molybdenum, 0.5-2.0% copper, 0.05-2.0% aluminium, 0.03-0.3% vanadium, 0.005-0.20% rare earth, not more than 0.5% silicon, not more than 0.7% manganese, not more than 0.05% phosphor and ferric.

Description

technical field [0001] The invention relates to a cast iron, in particular to a rare earth multi-element micro-alloyed high-chromium cast iron and its application. Background technique [0002] With the development of science, technology and economy, the application range of welded pipes with lower production costs instead of seamless steel pipes is expanding day by day. The straight seam steel pipe made of cold and hot steel coils is a forming system composed of multiple horizontal rolls with holes and vertical rolls, which are subjected to circular arc cold bending under force one by one, and gradually deformed into round pipes, and then passed through Micro cold drawing of welding and sizing unit to produce qualified products. During the forming process of the product, there is strong friction and extrusion between the tube blank and the roll pass, which causes the wear of the roll pass, and the size of the formed roll pass gradually decreases, that is, the roll loss. T...

Claims

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Application Information

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IPC IPC(8): C22C37/10B21B27/00B21C25/00
Inventor 成祥
Owner JINAN JIN PIN MAGNETIC MATERIALS & DIVECES
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