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Hard alloy composite side tooth for high-pressure roller mill and preparation method of hard alloy composite side tooth

A high-pressure roller mill and cemented carbide technology, which is applied in grain processing and other fields, can solve the problems of low overall efficiency and high cost

Inactive Publication Date: 2021-05-11
ZHUZHOU HARD ALLOY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the upgrading and transformation of the national industry, the environmental protection requirements for the production capacity, production efficiency and service life of high-pressure roller mills have increased. More and more companies use edge teeth or wear-resistant blocks on the edge of the roller surface to protect the roller surface from material abrasion. At present, the mosaic type with complex shapes is mostly used, which requires complex processing of the roller surface and side teeth, the overall efficiency is not high, and the cost is also high

Method used

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  • Hard alloy composite side tooth for high-pressure roller mill and preparation method of hard alloy composite side tooth
  • Hard alloy composite side tooth for high-pressure roller mill and preparation method of hard alloy composite side tooth

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Experimental program
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Effect test

Embodiment 1

[0026] A cemented carbide composite side tooth, the product is used for anti-abrasion on the edge of the roll surface of a high-pressure roller mill. The weight percentage of the alloy formula of this composition: ①Working parts: Co powder 15%, Fsss particle size 2-3μm; WC85%, Fsss Particle size 3 ~ 4μm. ② Mosaic parts: Co powder 11%, Fsss particle size 2-3μm; WC: 89%, Fsss particle size 3-4μm. The shape of the product is as figure 1 shown.

[0027] The preparation method of the above-mentioned cemented carbide composite side teeth: ① working parts: take the above-mentioned raw materials in proportion, with a total weight of 600kg, put them into a 600L tiltable ball mill, use alcohol as the wet grinding medium, and the ball-to-material ratio is 4.3:1, The liquid-solid ratio is 300ml / kg, and the paraffin molding agent is added according to 2% of the total weight of the raw materials. The ball milling time is 36 hours. After the wet-milled slurry is spray-dried and pressed, it...

Embodiment 2

[0030] A cemented carbide composite edge tooth, which is used for anti-abrasion on the edge of the roll surface of a high-pressure roller mill. The weight percentage of the alloy formula of this composition: ①Working parts: Co powder: 14.5%, Fsss particle size 2-3μm, Cr 3 C 4 content of 0.5%, Fsss particle size 1 ~ 2μm, WC: 85%, Fsss particle size 2 ~ 3μm; ② mosaic parts: Co powder: 18%, Fsss particle size 2 ~ 3μm, WC: 80%, Fsss particle size 3 ~ 4μm ;Product shape such as figure 1 shown.

[0031] The preparation method of the above-mentioned cemented carbide composite side teeth: ① Working parts: Take the above-mentioned raw materials in proportion, with a total weight of 600kg, put them into a 600L tiltable ball mill, use alcohol as the wet grinding medium, and the ball-to-material ratio is 4.5:1. The solid ratio is 330ml / kg, and the paraffin molding agent is added according to 2% of the total weight of the raw materials. The ball milling time is selected to be 37h. After ...

Embodiment 3

[0034] A cemented carbide composite edge tooth, which is used for anti-abrasion on the edge of the roll surface of a high-pressure roller mill. The weight percentage of the alloy formula of this composition: ①Working parts: Co powder 18%, Fsss particle size 2-3μm; WC82%, Fsss particle size 2~3μm. ② Mosaic parts: weight ratio TiC35%, Fe 59%, Mo 2%, Cr2%, its hardness is 84. The shape of the product is as figure 1 shown.

[0035]The preparation method of the above-mentioned cemented carbide composite side teeth: ① working parts: take the above-mentioned raw materials in proportion, with a total weight of 600kg, put them into a 600L tiltable ball mill, use alcohol as the wet grinding medium, and the ball-to-material ratio is 5.5:1, The liquid-solid ratio is 300ml / kg, and the paraffin molding agent is added according to 2% of the total weight of the raw materials. The ball milling time is 38 hours. After the wet-milled slurry is spray-dried and pressed, it is sintered under a pr...

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Abstract

The invention discloses a hard alloy composite side tooth for a high-pressure roller mill and a preparation method of the hard alloy composite side tooth. The hard alloy composite side tooth comprises a working part and an embedded part; wherein the working part is made of a hard alloy material, and a hard alloy of the working part is prepared from the following components in percentage, by mass, 10-20 wt% of Co, 0-3 wt% of Cr and the balance of WC; the inlay part is also prepared from the hard alloy material, and the hard alloy of the inlay part is prepared from the following components in percentage, by mass, 6-15wt% of Co and the balance of WC, or the matrix is directly a steel-bonded alloy matrix; and the working part and the inlaying part are connected together through high-temperature alloying according to assembly and design. The composite side tooth working part and the inlaying part can be flexibly assembled, the relative position of the inlaying part and the working part can be adjusted according to design requirements, product material matching is diversified, different use working condition requirements can be met, the whole matching mode has originality, and the assembling method has originality.

Description

technical field [0001] The invention belongs to the field of hard alloy manufacture, and in particular relates to a hard alloy composite side tooth for a high-pressure roller mill and a preparation method thereof. Background technique [0002] Cemented carbide has the characteristics of high strength and high hardness, and is widely used in the fields of forming molds, cutting tools, mining tools and wear-resistant parts. High-pressure roller mills are widely used in metal mines and cement crushing industries, and are currently the most concerned mining production equipment in the domestic mining industry. The fine grinding of the surface area and the crushing of metal ore can realize the production practice of simplifying the crushing process, more crushing and less grinding, improving system production capacity, improving grinding effect or sorting index, etc. [0003] With the upgrading and transformation of the national industry, the environmental protection requirement...

Claims

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Application Information

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IPC IPC(8): B02C4/30B02C23/00C22C29/08B22F7/06B22F3/14B22F9/04
CPCB02C4/30B02C23/00B02C2210/02B22F3/14B22F7/06B22F9/04B22F2009/043C22C29/08
Inventor 谢浩朱立荣夏艳萍李文慧赵舞溪
Owner ZHUZHOU HARD ALLOY GRP CO LTD
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