Hard alloy disc pin cutter and production process thereof

A cemented carbide and production process technology, applied in the field of cemented carbide disc foot cutter and its production process, can solve the problems of easy fracture and low bending strength, achieve good compactness, improve compactness and optimize process effect of steps

Inactive Publication Date: 2018-05-08
ZHUZHOU SANXIN HARD ALLOY PRODN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hard alloy disc cutting knife for the current disc cutting knife made of high-quality tungsten steel, which has high hardness but low bending strength and is easily broken by external impact. , the hard alloy disc cutting foot knife is based on WC-8Co hard alloy (Co content is 8wt%), and the introduction of metal oxide is used to improve the toughness and wear resistance of WC-8Co hard alloy

Method used

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  • Hard alloy disc pin cutter and production process thereof
  • Hard alloy disc pin cutter and production process thereof
  • Hard alloy disc pin cutter and production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The present embodiment provides a kind of production technology of cemented carbide disc cutting foot knife, comprises the following steps:

[0064] S1. 0.5% ZrO2, 0.1% La by weight percentage 2 o 3 , 6% Co powder, 0.03% Y 2 o 3 , 93.37% WC powder is mixed to obtain 1Kg of mixture, the WC powder in the mixture has a Fischer particle size of 2um, and the Co powder has a Fischer particle size of 1.5um. Add 1Kg of the mixture into a ball mill cylinder with a volume of 2L, and add cemented carbide grinding rods 3Kg, the wet grinding medium is industrial alcohol with a water content of 5wt%, the wet grinding time is 30h, and the slurry is obtained after wet grinding; the slurry is dried for 5-7h, and the dried material powder is mixed with glue and granulated, and then pressed into The disc knife is degummed and sintered, the final sintering temperature is 1450°C, and the heat preservation is 1h, and the disc knife blank is made;

[0065] S2. The processing and molding i...

Embodiment 2

[0075] A kind of production technology of hard alloy disc cutting foot knife of present embodiment, comprises the following steps:

[0076] S1. 0.3% ZrO2, 0.3% La by weight percentage 2 o 3 , 6% Co powder, 0.01% Y 2 o 3 , 93.39% WC powder mixed to obtain 1Kg mixture, the WC powder Fisherman's particle size in the mixture is 2um, the Co powder Fisherman's particle size is 1.5um, put 1Kg of the mixture into a ball mill cylinder with a volume of 2L, and add cemented carbide grinding rods 3Kg, the wet grinding medium is industrial alcohol with a water content of 5wt%, the wet grinding time is 30h, and the slurry is obtained after wet grinding. The slurry is dried for 5-7h, and the dried material powder is mixed with glue and granulated, and then pressed Form a disc cutter, carry out degumming and sintering, the final sintering temperature is 1450°C, keep warm for 1h, and make a disc cutter blank;

[0077] S2. The processing and molding in this embodiment is mainly aimed at the...

Embodiment 3

[0087] The present embodiment provides a kind of production technology of cemented carbide disc cutting foot knife, comprises the following steps:

[0088] S1. 0.1% ZrO2, 0.5% La by weight percentage 2 o 3 , 6% Co powder, 0.05% Y 2 o 3 , 93.35% WC powder mixed to obtain 1Kg mixture, the WC powder Fisherman's particle size in the mixture is 2um, the Co powder Fisherman's particle size is 1.5um, put 1Kg of the mixture into a ball mill cylinder with a volume of 2L, and add cemented carbide grinding rods 3Kg, the wet grinding medium is industrial alcohol with a water content of 5wt%, the wet grinding time is 30h, the slurry is obtained after wet grinding, the slurry is dried for 5-7h, the dried material powder is mixed with glue and granulated, and then pressed into The disc knife is degummed and sintered, the final sintering temperature is 1450°C, and the heat preservation is 1h, and the disc knife blank is made;

[0089] S2. The processing and molding in this embodiment is mai...

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Abstract

The invention relates to the technical field of hard alloy blades and discloses a hard alloy disc pin cutter and a production process thereof. The hard alloy disc pin cutter is made of an enhanced type hard alloy based on tungsten and cobalt, the bending strength of a blade is 3100-3369 MPa, the hardness is 89.0-89.4 HRA, density is 14.70-14.72 g / cm<3>, the average grain size is 1.6 [mu]m, and theenhanced type hard alloy based on tungsten and cobalt is formed by mixing, by weight, 0.1-0.5% of ZrO2, 0.1-0.5% of La2O3, 0.01-0,05% of Y2O3, 6% of Co powder, and the balance WC powder. The processparameters are optimized for pin cutters of two specifications, the precision of the prepared hard alloy disc pin cutter is high and can be controlled within four wires, the surface coarseness degreeis good and reaches about 0.8 [mu]m, the flatness is high, no notch occurs, and the hard alloy disc pin cutter does not vibrate when being clamped and used on a machine.

Description

technical field [0001] The invention relates to the technical field of cemented carbide blades, in particular to a cemented carbide disc cutter and a production process thereof. Background technique [0002] The foot cutting blade is commonly known as the foot cutting machine blade, also known as the foot cutting machine blade, or the foot cutting knife. Because the shape is round, it is also called a disc cutting knife. It is mainly used for cutting the lead pins of electronic circuit boards on the cutting machine. The specifications of the cutting machine blades mainly include Φ250×Φ70×3.5 and Φ200 ×Φ70×3.5, which is often referred to as 10 inches and 8 inches. Its main material is hard alloy. The main component of cemented carbide is tungsten carbide, so it is also called tungsten steel, so it is also called tungsten steel cutting machine blade. As a high hardness, high strength, wear-resistant and corrosion-resistant material, cemented carbide is widely used in the cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D35/00B23P15/40C22C29/02
CPCB23D35/001B23P15/40C22C29/005C22C29/02
Inventor 张冶夫
Owner ZHUZHOU SANXIN HARD ALLOY PRODN CO LTD
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