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High-toughness titanium carbide-high manganese steel knot hard alloy as well as preparation method and application thereof

A hard alloy and tough titanium carbide technology, which is applied in the field of high-strength and tough titanium carbide-high manganese steel bonded hard alloy and its preparation, can solve the problems of no inspection and low mechanical properties

Inactive Publication Date: 2019-06-18
LAIWU VOCATIONAL & TECHNICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the molybdenum-free cermet materials, the mechanical properties are low, the flexural strength is only 1100MPa, or it has not been tested, and it cannot be used in heavy-duty, impact applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: a kind of preparation method of high-strength and tough titanium carbide-high manganese steel bonded hard alloy, the preparation method of described high-strength and tough titanium carbide-high manganese steel bonded hard alloy comprises the following steps:

[0035] S1, using titanium carbide powder as the hard phase, iron-molybdenum pre-alloyed powder as the binder, and simultaneously adding nickel, manganese, carbon, and inhibitors; wherein, the titanium carbide powder is 100 parts by weight, and the iron-molybdenum pre-alloyed powder is 50 parts by weight. parts, 2-10 parts of nickel, 15 parts of manganese, 10 parts of carbon, 10 parts of inhibitor, and the said inhibitor is VC;

[0036] S2. After mixing the components of step S1 evenly, wet milling is carried out after introducing carbon dioxide protective gas, and the mixed powder is obtained through wet milling; the wet milling uses alcohol as the wet milling medium, the liquid-solid ratio is 200 / kg...

Embodiment 2

[0046] Embodiment 2: a kind of preparation method of high-strength and tough titanium carbide-high manganese steel bonded hard alloy, the preparation method of described high-strength and tough titanium carbide-high manganese steel bonded hard alloy comprises the following steps:

[0047] S1, using titanium carbide powder as the hard phase, iron-molybdenum pre-alloyed powder as the binder, and adding nickel, manganese, carbon, and inhibitors simultaneously; wherein, titanium carbide powder is 150 parts by weight, and iron-molybdenum pre-alloyed powder is 60 parts parts, 6 parts of nickel, 18 parts of manganese, 15 parts of carbon, 12 parts of inhibitor, the inhibitor is Cr 3 C 2 ;

[0048] S2. After mixing the components of step S1 evenly, wet milling is carried out after feeding carbon dioxide protective gas, and the mixed powder is obtained through wet milling; the wet milling uses alcohol as the wet milling medium, the liquid-solid ratio is 150ml / kg, and the ball milling s...

Embodiment 3

[0057] Embodiment 3: a kind of preparation method of high-strength and tough titanium carbide-high manganese steel bonded hard alloy, the preparation method of described high-strength and tough titanium carbide-high manganese steel bonded hard alloy comprises the following steps:

[0058] S1, using titanium carbide powder as the hard phase, iron-molybdenum pre-alloyed powder as the binder, and simultaneously adding nickel, manganese, carbon, and inhibitors; wherein, titanium carbide powder is 200 parts by weight, and iron-molybdenum pre-alloyed powder is 80 parts by weight. 10 parts, 10 parts of nickel, 30 parts of manganese, 20 parts of carbon, 15 parts of inhibitor, and described inhibitor is VC;

[0059] S2. After mixing the components of step S1 evenly, wet milling is carried out after introducing carbon dioxide protective gas, and the mixed powder is obtained through wet milling; the wet milling uses alcohol as the wet milling medium, the liquid-solid ratio is 300ml / kg, an...

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Abstract

The invention discloses high-toughness titanium carbide-high manganese steel knot hard alloy and a preparation method thereof. The preparation method comprises the following steps: taking titanium carbide powder as a hard phase and water atomized iron molybdenum prealloy powder adhesive, adding nickel, manganese, carbon, an inhibitor and the like, ball-milling a protective medium to obtain superfine mixed powder, performing secondary reduction on the powder to reduce the oxygen content, and performing forming, vacuum sintering and heat treatment processes to obtain the steel knot hard alloy product. The tool steel knot hard alloy prepared by the material and the process has excellent comprehensive properties; and on the basis that the hardness is HRC63-64, the bending strength reaches to 2400 to 2500 MPa, the impact toughness is 10 to 11 J / cm<2>, and the strength and the toughness are increased by more than 20 percent compared with those of the conventional TM52.

Description

technical field [0001] The invention belongs to the technical field of alloy preparation, and in particular relates to a high-strength and tough titanium carbide-high manganese steel bonded hard alloy and a preparation method. Background technique [0002] At present, steel-bonded cemented carbide is made of one or more carbides (such as TiC, WC, TaC, NbC, etc.) as the hard phase, high-speed steel or alloy steel as the binder, and manufactured by powder metallurgy. It is actually a new type of cemented carbide developed on the basis of cemented carbide. The carbide phase endows the alloy with good wear resistance, and the binder phase provides strength and toughness, as well as heat treatment, machinability, forgeability, and weldability. Therefore, steel-bonded cemented carbide is widely used in the production of various Molds, knives and heat-resistant, corrosion-resistant parts, etc. [0003] As we all know, the strength and toughness of traditional steel-bonded cemente...

Claims

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Application Information

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IPC IPC(8): C22C29/10C22C1/05C22C1/10
Inventor 李国平郭丽波陈文
Owner LAIWU VOCATIONAL & TECHNICAL COLLEGE
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