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Silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and production technique thereof

A technology of excavator bucket teeth and low-alloy steel, applied in the direction of earth mover/shovel, manufacturing tools, furnace types, etc., can solve the problems of easy wear and tear, poor wear resistance, etc., achieve long service life, improve durability Abrasiveness, the effect of optimizing the chemical composition

Inactive Publication Date: 2014-03-05
HENAN LIDE METAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems of poor wear resistance and easy replacement of the existing excavator bucket teeth, and provides a silicon-manganese-chromium-molybdenum low-alloy steel excavator bucket tooth and its production process. The processed excavator bucket teeth have high wear resistance, long lasting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A Volvo 360 excavator bucket tooth and its production process

[0020] The composition (weight%) of silicon-manganese-chromium-molybdenum low-alloy steel contained in a 360 excavator bucket tooth is: C: 0.30, Si: 1.20, Mn: 1.00, Cr: 1.00, Mo: 0.40, P: 0.02, S: 0.009, Ni: 0.40, and the balance is Fe.

[0021] The casting process of silicon-manganese-chromium-molybdenum low-alloy steel excavator bucket teeth, which uses an induction furnace to melt silicon-manganese-chromium-molybdenum low-alloy steel, adopts sand casting, and the pouring temperature is 1570°C. After pouring, the casting is naturally cooled to 300°C for falling sand .

[0022] Heat treatment process of bucket teeth of silicon-manganese-chromium-molybdenum low-alloy steel excavator: After the bucket teeth are poured, heat treatment is carried out, the bucket tooth castings are placed in a heat treatment furnace and heated to 900°C for 150 minutes, and then the bucket tooth castings are put into a weight r...

Embodiment 2

[0024] A Komatsu 400 excavator bucket tooth and its production process

[0025] The composition (weight%) of silicon-manganese-chromium-molybdenum low-alloy steel contained in a 400 excavator bucket tooth is: C: 0.35, Si: 1.00, Mn: 0.80, Cr: 1.30, Mo: 0.30, P: 0.017, S: 0.011, Ni: 0.45, and the balance is Fe.

[0026] The casting process of silicon-manganese-chromium-molybdenum low-alloy steel excavator bucket teeth, which uses an induction furnace to melt silicon-manganese-chromium-molybdenum low-alloy steel, adopts sand casting, and the pouring temperature is 1550°C. After pouring, the casting is naturally cooled to 400°C to shake off sand. .

[0027] Heat treatment process of silicon manganese chromium molybdenum low alloy steel excavator bucket teeth: after the bucket teeth are poured, heat treatment is carried out, the bucket tooth castings are placed in a heat treatment furnace and heated to 910°C for 150min, and then the bucket tooth castings are put into a weight rati...

Embodiment 3

[0028] A 3-ton excavator bucket tooth and its production process

[0029] The composition (% by weight) of the silicon-manganese-chromium-molybdenum low-alloy steel contained in the bucket teeth of a 3-ton excavator is: C: 0.26, Si: 0.90, Mn: 1.10, Cr: 1.10, Mo: 0.33, P: 0.02, Ni: 0.49, the balance being Fe.

[0030] The pouring process of silicon-manganese-chromium-molybdenum low-alloy steel excavator bucket teeth, which uses an induction furnace to melt silicon-manganese-chromium-molybdenum low-alloy steel, adopts vacuum full mold casting, resin sand casting, and sand mold casting. The pouring temperature is 1560°C. After the casting is finished, the casting is naturally cooled to 350°C for sand shakeout;

[0031] Heat treatment process of silicon manganese chromium molybdenum low alloy steel excavator bucket teeth: Anneal the bucket teeth after pouring, put the bucket tooth castings into the heat treatment furnace and heat them to 890°C for 150min, then put the bucket toot...

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Abstract

The invention provides a silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth and a production technique thereof. The silicon-manganese-chrome-molybdenum low-alloy steel of the excavator bucket tooth comprises 0.26-0.36 wt% of C, 0.80-1.20 wt% of Si, 0.80-1.20 wt% of Mn, 1.00-1.30 wt% of Cr, 0.30-0.40 wt% of Mo, at most 0.02 wt% of P, at most 0.02 wt% of S, greater than 0 and smaller than and equal to 0.50wt% of Ni, and the balance of Fe. The production technique is composed of a casting technique and a heat treatment technique. The silicon-manganese-chrome-molybdenum low-alloy steel excavator bucket tooth produced by the method is a bainitic structure, and has the advantages of favorable mechanical properties, high hardness, high toughness, high wear resistance, high tensile strength and long service life.

Description

technical field [0001] The invention relates to an excavator bucket tooth and a production process thereof, in particular to a silicon manganese chromium molybdenum low alloy steel excavator bucket tooth and a production process thereof. Background technique [0002] Excavator bucket teeth are an important part of the excavator. It is the most vulnerable part in the mining process and is prone to breakage. At present, the commonly used excavator bucket teeth in China are high manganese steel, which has complex processing technology and poor wear resistance. Contents of the invention [0003] The present invention aims at the problems of poor wear resistance and easy replacement of the existing excavator bucket teeth, and provides a silicon-manganese-chromium-molybdenum low-alloy steel excavator bucket tooth and its production process. The processed excavator bucket teeth have high wear resistance, long lasting. [0004] In order to achieve the above object, the technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C21D1/20C21D9/00C21D1/607E02F9/28
Inventor 张克忠韩肖
Owner HENAN LIDE METAL MATERIALS
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