A kind of solid carbide hob and its manufacturing process

A solid carbide, manufacturing process technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems such as wear, chipping, thermal cracking, etc., achieve extremely low friction coefficient, increase hardness, and reduce manufacturing costs.

Active Publication Date: 2021-02-02
SHANGHAI RES INST OF MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is exactly to provide a kind of solid carbide hob and its manufacturing process in order to overcome the defective that above-mentioned prior art exists, and solid carbide hob has advantages such as high strength, high toughness, high speed, high efficiency, and manufacturing process Effectively solve the problems of tooth chipping, thermal cracking, wear and other problems in the processing process of existing domestic carbide hob products

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  • A kind of solid carbide hob and its manufacturing process

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Embodiment 1

[0034] An integral hard alloy hob is composed of the following raw materials in parts by weight: 90 parts of hard phase, 9 parts of binder phase, 0.5 part of inhibitor, and 0.5 part of additive. The hard phase is tungsten carbide with a purity of 99.7% and a particle size of 0.5 μm; the binder phase is cobalt powder with a purity of 99.99%; the inhibitor is chromium carbide with a purity of 99.93% and tantalum carbide with a purity of 99.95%; Each component composition is respectively: 20% Tween 60, 30% Span 80, 0.01% graphene, and the balance is rare earth elements, and the composition of rare earth elements is lanthanum: yttrium: neodymium: praseodymium = 2:1: 4:1. Solid carbide hobs are made through the following process steps:

[0035] (1) Wet milling: the raw materials weighed according to the above proportions are wet milled by a drum ball mill, the wet milling medium is acetone, and the grinding balls are ultrafine cemented carbide balls (Fisher particle size 0.2 μm), ...

Embodiment 2

[0042]An integral hard alloy hob is composed of the following raw materials in parts by weight: 89 parts of hard phase, 9 parts of binder phase, 0.5 part of inhibitor, and 1.5 parts of additive. The hard phase is tungsten carbide with a purity of 99.7% and a particle size of 0.5 μm; the binder phase is cobalt powder with a purity of 99.99%; the inhibitor is chromium carbide with a purity of 99.93% and tantalum carbide with a purity of 99.95%; The composition of each component is: 30% Tween 60, 20% Span 80, 0.05% graphene, and the balance is rare earth elements, and the composition of rare earth elements is lanthanum: yttrium: neodymium: praseodymium = 2:1 :4:1. Solid carbide hobs are made through the following process steps:

[0043] (1) Wet milling: the raw materials weighed according to the above proportions are wet milled by a drum ball mill, the wet milling medium is acetone, and the grinding balls are ultrafine cemented carbide balls (Fisher particle size 0.2 μm), and th...

Embodiment 3

[0050] An integral hard alloy hob is composed of the following raw materials in parts by weight: 88 parts of hard phase, 9 parts of binder phase, 1 part of inhibitor, and 2 parts of additive. The hard phase is tungsten carbide with a purity of 99.7% and a particle size of 0.5 μm; the binder phase is cobalt powder with a purity of 99.99%; the inhibitor is chromium carbide with a purity of 99.93% and tantalum carbide with a purity of 99.95%; The components are respectively: 20% Tween 60, 30% Span 80, 0.1% graphene, and the balance is rare earth elements, and the composition of rare earth elements is lanthanum: yttrium: neodymium: praseodymium = 2:1: 4:1. Solid carbide hobs are made through the following process steps:

[0051] (1) Wet milling: the raw materials weighed according to the above proportions are wet milled by a drum ball mill, the wet milling medium is acetone, and the grinding balls are ultrafine cemented carbide balls (Fisher particle size 0.2 μm), and the ball-to...

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Abstract

The invention discloses an integral hard alloy hob and its manufacturing process. The hob is composed of the following raw materials in parts by weight: 85-92 parts of hard phase, 7-11 parts of bonding phase, 0.2-2 parts of inhibitor and 0.01 parts of ~2 parts additive. The hard phase is tungsten carbide; the bonding phase is cobalt powder; the inhibitor is chromium carbide or tantalum carbide; the composition of each component in the additive is: 5% to 40% Tween 60, 5% %-60% Span 80, 0.001%-5% graphene, and the balance is rare earth elements. The above mixed raw materials are subjected to wet grinding, wet sieving, drying, pressing, sintering and grinding to obtain a solid carbide hob. The integral hard alloy hob of the invention has both strength and toughness, is not prone to tooth chipping during high-speed heavy cutting, and can be used in the gear processing industry.

Description

technical field [0001] The invention relates to the technical field of hob processing, in particular to an integral hard alloy hob and a manufacturing process thereof. Background technique [0002] With the advancement of the construction of various domestic industries, the technological development of many high-end manufacturing fields in my country has brought new requirements to metal knives. Compared with traditional hobbing, high-speed and high-efficiency hobbing technology has greatly improved cutting parameters such as cutting speed, feed rate, and cutting depth. Therefore, many new features are presented in the high-speed hobbing process. The requirements for cutting tools are also higher and stricter, and gear processing technology is developing rapidly in the direction of high-speed, high-efficiency, and heavy-duty cutting. With the continuous emergence of precision instruments in various industries, transmission gears are becoming more and more refined, and the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F5/00B22F1/00B22F3/16C22C29/08
CPCC22C29/067C22C29/08B22F5/00B22F2998/10B22F2005/001B22F1/102B22F1/14B22F2003/247B22F3/10B22F3/02
Inventor 聂婭廖江雄杜玉国蒋丁丁
Owner SHANGHAI RES INST OF MATERIALS CO LTD
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