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Cobalt-bonded titanium carbide-based wear-resistant and corrosion-resistant hard alloy and preparation method thereof

A technology of cemented carbide and titanium carbide, which is applied in the field of cemented carbide, can solve the problems of non-compliance with health and environmental protection, and achieve the effects of wide application, reduced interface segregation, and low density

Active Publication Date: 2017-12-01
四川科力特硬质合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, people's awareness of health and environmental protection is increasing, and the health requirements for products are also getting higher and higher. However, most titanium-based cermets on the market contain more or less nickel elements, which do not meet the requirements of health and environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 90wt% TiC, 8wt% VC, 2wt% Cr 3 C 2The powder is filled in a nylon tank, and alloy balls with a mass ratio of ball to material of 8:1 are added, mixed evenly and refined on a planetary ball mill to obtain a ball mill. The molding agent and solvent oil added to the ball abrasive, the molding agent is SD-B glue, and the solvent oil is 120#, and then mixed evenly. The mixed mixture was dried in a vacuum oven, heated to 80°C, and kept at a temperature of 6 hours. During the heat preservation period, it was taken out and stirred every 30 minutes. The dried mixture is granulated through a sieve wiper and sieved again. The sieved mixture is pressed and formed by a hydraulic press, and the obtained green parts are placed under vacuum conditions or a protective gas atmosphere, heated to 1700°C, kept for 30 minutes, cooled with the furnace, and released from the furnace. The obtained parts are crushed by a crusher and sieved to obtain TiC-MC solid solution powder with a particle...

Embodiment 2

[0043] 98wt% TiC, 1.8wt% VC, 0.2wt% Cr 3 C 2 The powder is filled in a nylon tank, and alloy balls with a mass ratio of ball to material of 8:1 are added, mixed evenly and refined on a planetary ball mill to obtain a ball mill. The molding agent and solvent oil added to the ball abrasive, the molding agent is SD-B glue, and the solvent oil is 120#, and then mixed evenly. The mixed mixture was dried in a vacuum oven, heated to 80°C, and kept at a temperature of 6 hours. During the heat preservation period, it was taken out and stirred every 30 minutes. The dried mixture is granulated through a sieve wiper and sieved again. The sieved mixture is pressed and formed by a hydraulic press, and the obtained green parts are placed under vacuum conditions or a protective gas atmosphere, heated to 1700°C, kept for 30 minutes, cooled with the furnace, and released from the furnace. The obtained parts are crushed by a crusher and sieved to obtain TiC-MC solid solution powder with a par...

Embodiment 3

[0048] 96wt% TiC, 3wt% VC, 1wt% Cr 3 C 2 The powder is filled in a nylon tank, and alloy balls with a mass ratio of ball to material of 8:1 are added, mixed evenly and refined on a planetary ball mill to obtain a ball mill. The molding agent and solvent oil added to the ball abrasive, the molding agent is SD-B glue, and the solvent oil is 120#, and then mixed evenly. The mixed mixture was dried in a vacuum oven, heated to 80°C, and kept at a temperature of 6 hours. During the heat preservation period, it was taken out and stirred every 30 minutes. The dried mixture is granulated through a sieve wiper and sieved again. The sieved mixture is pressed and formed by a hydraulic press, and the obtained green parts are placed under vacuum conditions or a protective gas atmosphere, heated to 1700°C, kept for 30 minutes, cooled with the furnace, and released from the furnace. The obtained parts are crushed by a crusher and sieved to obtain TiC-MC solid solution powder with a particl...

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Abstract

The invention discloses cobalt-bonded titanium carbide based wear-resisting corrosion-resistant hard alloy and a preparation method thereof. The hard alloy consists of the following components in percentage by weight: a component A: 65-89wt% of titanium carbide-other carbide sosoloid, namely TiC-MC sosoloid; a component B: 11-35wt% of Co-rare earth metal alloy powder, Mo, TaC and WC mixed powder, wherein MC accounts for 2-10wt% of the component A, the balance is TiC, and M is one or two of V and Cr, and the grain size of the component A is 5-100 [mu] m; and the component B comprises 3-10wt% of Mo, 1-5wt% of TaC, 1-5wt% of WC and the balance Co-rare earth metal alloy powder, and the grain size of the component B is 5-100 [mu]m. Compared with conventional hard alloy, the hard alloy disclosed by the invention has the advantages of high toughness, high bending strength and high hardness.

Description

technical field [0001] The invention belongs to the technical field of hard alloys, and in particular relates to a cobalt-bonded titanium carbide-based wear-resistant and corrosion-resistant hard alloy and a preparation method thereof. Background technique [0002] At present, titanium carbide-based hard alloys mainly use TiC, VC, etc. as hard phase components, and Ni is used as a binder to form TiC-Ni-based hard alloys, or add Co and Mo elements to Ni to form TiC-Ni-Co-Mo Department of adhesives. [0003] For example, document 1: a method for manufacturing a titanium carbide-based hard alloy disclosed in a patent application whose publication number is CN103305712A. Made by vacuum sintering method, titanium carbide powder, nickel powder and molybdenum powder are wet ground together, and the compact is usually liquid-phase sintered at 1400-1500°C in vacuum. In the preparation of raw materials, part of nickel (Ni) is added to titanium carbide (TiC) powder, so that the titan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/10C22C1/05
CPCC22C1/051C22C29/005C22C29/10
Inventor 苏华谭斌
Owner 四川科力特硬质合金股份有限公司