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High-tenacity high-strength cast steel wear-resistant material and preparation method thereof

A wear-resistant material and high-strength technology, applied in the field of cast steel, can solve the problems of corrosion, uneven wear resistance, and many welding defects, and achieve the effects of avoiding poor weldability, improving annealing quality, and uniform heat flow

Inactive Publication Date: 2019-01-22
JIKAI HEBEI MECHATRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing wear-resistant materials are high-manganese steel, high-chromium cast iron, etc. Among them, high-manganese steel is only wear-resistant when the impact is large, the stress is high, and the abrasive is hard, and its yield strength is low and easy to deform. High-chromium cast iron contains more than 20% high-hardness eutectic carbide has excellent wear resistance, but there are deficiencies in high-temperature heat treatment variability and cracking, and high brittleness, so it is easy to peel off and crack during use, and the corrosion is serious under wet grinding conditions. The wear resistance is not uniform enough, and cast steel has poor weldability, many welding defects, high welding stress, and easy fracture caused by different materials of various parts. The present invention mainly develops a high toughness and high strength cast steel wear-resistant material and its The preparation method solves the problems existing in the above-mentioned existing materials

Method used

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  • High-tenacity high-strength cast steel wear-resistant material and preparation method thereof
  • High-tenacity high-strength cast steel wear-resistant material and preparation method thereof
  • High-tenacity high-strength cast steel wear-resistant material and preparation method thereof

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Effect test

Embodiment 1

[0042] like figure 1 As shown, a high-toughness and high-strength cast steel wear-resistant material and a preparation method thereof include the process steps of raw material preparation - raw material hot melting - TIN added in proportion - cast steel annealing - cast steel quenching and tempering - cast steel quality inspection, Specific steps are as follows:

[0043] (1) Raw material preparation: prepare the raw materials required for cast steel according to a certain proportion;

[0044] (2) Hot melting of raw materials: control the temperature of the high-temperature furnace, and place the quasi-quilted raw materials in the high-temperature furnace for hot melting;

[0045] (3) TIN is added in proportion: a certain proportion of TIN is added when the raw materials are hot-melted in a high-temperature furnace, and the molten steel is poured after hot-melting;

[0046] (4) The annealing steps of cast steel are as follows:

[0047] ①Place the cast steel on the storage ta...

Embodiment 2

[0055] like Figure 2-5 As shown, the ratio of raw materials in step (1) is: C: 0.2-0.4wt%, Si: 0.5-1.1wt%, Mn: 0.6-1.5wt%, Mo: 0.2-0.8wt%, Ni: 0.4-0.6 wt%, V: 0.04-0.05%, P≤0.025wt%, S≤0.025wt%, Al:≤0.07wt%, W: 0.1-0.2wt%, and the rest are Fe.

[0056] A further improvement scheme of the present invention is: the amount of TIN added in step (2) is 0.02-0.04wt% of the chemical quality of the raw material.

[0057] A further improvement scheme of the present invention is that: the annealing temperature of the cast steel in step (4) is 900±3°C, the temperature of austempering of the cast steel in step (5) is 350±3°C, and the tempering temperature of the cast steel is 550°C ±3°C.

[0058] A further improvement scheme of the present invention is that: the annealing furnace described in step (4) includes a furnace shell 1, an annealing chamber 3 is arranged inside the furnace shell 1, and a slide rail 7 is arranged on an outer surface of one side of the furnace shell 1 , a movab...

Embodiment 3

[0064] like Image 6 As shown, the blast pipe 16 runs through the annealing chamber 3 and the outer surface of one side of the furnace shell 1, the blast pipe 16 and the furnace shell 1 are fixedly connected, and the fan blade 14 is connected to the second motor 15. There is an active connection therebetween, and the input port of the second motor 15 and the blower 17 is electrically connected to the output port of the furnace shell 1 .

[0065] The working principle of the high-toughness and high-strength cast steel wear-resistant material and its preparation method: the user selects the raw materials according to C: 0.2-0.4wt%, Si: 0.5-1.1wt%, Mn: 0.6-1.5wt%, Mo: 0.2 -0.8wt%, Ni: 0.4-0.6wt%, V: 0.04-0.05%, P≤0.025wt%, S≤0.025wt%, Al:≤0.07wt%, W: 0.1-0.2wt%, the rest is Fe For preparation, the raw materials are placed in a high-temperature furnace to be heated and melted, TIN is added to it according to the proportion of the raw materials at 0.02-0.04wt%, the mixed molten st...

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Abstract

The invention discloses a high-tenacity high-strength cast steel wear-resistant material and a preparation method thereof. The method comprises the technology steps of raw material preparation, raw material hot melting, TIN adding according to a ratio, cast steel annealing, cast steel quenching and tempering and cast steel quality detection, through a series of thermal treatment technologies of isothermal quenching, high-temperature tempering and the like, the high-tenacity high-strength cast steel wear-resistant material has good tensile performance, and is not prone to deform or break, and by adding an appropriate amount of TIN in a hot melting process, the elongation at break is higher than or equal to 12%; V shape impact energy is higher than or equal to 45 J, the rockwell hardness HRCis 40-45, cast steel has higher impact resistance, the wear resistance performance of the cast steel is 1.5 times the wear resistance performance of an NM450 wear-resistant plate, the cast steel hasthe good wear resistance performance, wear resistance degrees of the cast steel are even, by conducting annealing in an annealing furnace at 900+ / -3 DEG C in cooperation with a fan and blades, the produced cast steel is even in wear resistance, and the problems that cast steel is poor in weldability, high in welding stress and prone to break, and has many welding defects due to the fact that various portions are made from different materials are solved.

Description

technical field [0001] The invention relates to the technical field of cast steel, in particular to a high toughness and high strength cast steel wear-resistant material and a preparation method thereof. Background technique [0002] Steel materials have the characteristics of large production scale, easy processing, reliable performance and convenient use, so they are still the dominant engineering materials in practical use. The annual consumption of steel materials in the world reaches more than 700 million tons, of which 50% is due to Wear and consumption, according to incomplete statistics, my country consumes more than 3 million tons of metal materials every year, and one of the main reasons for material wear is its lack of strength and toughness, so under the condition of impact wear, brittle damage is released. How to improve wear resistance? The toughness and strength of the material is a kind of goal to pursue. [0003] The existing wear-resistant materials are high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/12C22C38/08C22C38/06C21D6/00C21D1/18C21D1/26
CPCC21D1/18C21D1/26C21D6/001C21D6/005C21D6/008C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12
Inventor 苏怡宁赵辉周志彪文艳雷张宏财张建军
Owner JIKAI HEBEI MECHATRONICS TECH CO LTD
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