Low-price gang saw tool bit product and preparation method thereof

A cutter head product and a saw blade technology, which are applied in the field of low-cost gang saw cutter head products and their preparation, can solve the problems of rising prices of pure cobalt-based products, inability to deliver on time, etc., achieve excellent cutting ability, and reduce hole defects , and life-span equal effect

Inactive Publication Date: 2020-12-18
QINGDAO SHINHAN DIAMOND INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiment of the present invention provides a low-cost gang saw blade product and its preparation method, by using a mixed base material of iron, cobalt, and copper to ensure the life and sintering performance of the blade, reducing the Cost, the nickel and tin powder added to the raw materials of the cutter head are dispersed in the carcass to ensure the sharpness of the cutter head cutting, and solve the sharp rise in the price of cobalt powder, resulting in a rise in the price of pure cobalt-based products, which cannot be delivered on time goods problem

Method used

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  • Low-price gang saw tool bit product and preparation method thereof
  • Low-price gang saw tool bit product and preparation method thereof
  • Low-price gang saw tool bit product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] according to figure 1 A low-priced gang saw cutter head product is shown, the cutter head material used in the cutter head product is sintered after mixing metal powder, liquid paraffin and diamond, and the metal powder (by weight) is composed of the following powders Raw material composition: 35-45 parts of cobalt, 25-35 parts of iron, 25-35 parts of copper, 1-5 parts of nickel, 0.8 parts of La, 1-1.2 parts of the liquid paraffin, and the volume of the diamond in the cutter head material The ratio is 30%, and the diamond is added according to the volume percentage of the cutter head material;

[0031] Further, the cutter head material (in parts by weight) is composed of the following raw materials: 35-45 parts of cobalt, 25-35 parts of iron, 25-35 parts of copper, 1-5 parts of nickel, 2-8 parts of tin, 0.8 part of La, 1-1.2 part of liquid paraffin, and a volume ratio of 30% diamond, the diamond is added according to the volume percentage of the cutter head material; ...

Embodiment 2

[0042] according to figure 1 A low-priced gang saw cutter head product is shown, the cutter head material used in the cutter head product is sintered after mixing metal powder, liquid paraffin and diamond, and the metal powder (by weight) is composed of the following powders Raw material composition: 35-45 parts of cobalt, 25-35 parts of iron, 25-35 parts of copper, 1-5 parts of nickel, 0.8 parts of La, 1-1.2 parts of the liquid paraffin, and the volume of the diamond in the cutter head material The ratio is 30%, and the diamond is added according to the volume percentage of the cutter head material;

[0043] Further, the cutter head material (in parts by weight) is composed of the following raw materials: 35-45 parts of cobalt, 25-35 parts of iron, 25-35 parts of copper, 1-5 parts of nickel, 2-8 parts of tin, 0.8 part of La, 1-1.2 part of liquid paraffin, and a volume ratio of 30% diamond, the diamond is added according to the volume percentage of the cutter head material; ...

Embodiment 3

[0058] The present invention adds an appropriate amount of rare earth elements to the cutter head material based on trial and error. The research shows that the blank carcass sample containing La and the corresponding carcass sample added with diamond have higher flexural strength than the carcass sample without La. The average three-point flexural strength of the blank carcass containing La is about 120MPa higher than that of the blank carcass not containing La. The average three-point flexural strength of the diamond matrix sample containing La is about 80MPa higher than that without La. see details figure 2 and 3 .

[0059] From a chemical point of view, there is also a reason for the increase in carcass strength by adding La:

[0060] 1) Strong reducing property of La element. La is a very active rare earth metal, and it is easy to undergo oxidation-reduction reactions with impurity elements such as O and S. After the reaction, the particles of La oxides and sulfides...

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Abstract

The invention discloses a low-price gang saw tool bit product and a preparation method thereof, and particularly relates to the field of gang saw tool bits. A tool bit material adopted by the tool bitproduct is formed by mixing and sintering metal powder, liquid paraffin and diamond, wherein the metal powder is prepared from the following powder raw materials in part by weight: 35-45 parts of cobalt, 25-35 parts of iron, 25-35 parts of copper, 1-5 parts of nickel and 0.8 part of La, the liquid paraffin accounts for 1-1.2 parts, and the diamond accounts for 30% of the volume of the tool bit material. According to the low-price gang saw tool bit product and the preparation method thereof, by adding different contents of Fe, Cu, Ni and Sn and a small amount of rare earth elements, the hardness HRB, the bending strength and the abrasion ratio of a matrix are kept, so that the mechanical property and the abrasion resistance of the gang saw tool bit to the matrix are met; and the characteristics of the matrix are matched by using the diamond with the fixed grade and granularity, the holding force of the matrix on the diamond and the edge exposure effect are ensured, and the cutting sharpness and the service life of a cobalt-based product are achieved by using a sintering process matched with the characteristics of the matrix.

Description

technical field [0001] The invention relates to the technical field of gang saw blades, more specifically, the invention relates to a low-cost gang saw blade product and a preparation method thereof. Background technique [0002] The existing gang saw products are mainly divided into two categories: one is pure cobalt-based products, and the other is iron-based products. Pure cobalt-based products have the advantages of sharpness, long life, and smooth cutting of marble slabs. Due to the low sharpness of iron-based products, frequent sharpening is required, so the cutting speed of the product is low, the service life is low, and it is easy to cause vibration during the cutting process, resulting in wavy patterns or marble slab cracks during the cutting process The problem occurs, customers can only cut low-priced, soft marble stone. [0003] Although the cutting quality of cobalt-based products is good, due to the rapid development of the international and domestic new ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00B22F3/105B22F3/02B22F1/00C22C26/00C22C30/02B28D1/12
CPCB22F5/00B22F3/02C22C30/02C22C26/00B28D1/127B22F2005/001B22F2003/023B22F1/10
Inventor 许基范李斌王贵珍王华磊
Owner QINGDAO SHINHAN DIAMOND INDUSTRY CO LTD
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