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Manufacturing method of crankshaft high-performance alloy mold

A manufacturing method and high-performance technology, applied in the field of mold processing, can solve the problems of not meeting the requirements of high temperature resistance, hardness and shrinkage processing performance at the same time, single-component alloy steel performance improvement, poor high temperature resistance, and poor hardness performance. , to avoid the unstable properties of the mold, improve the overall processing performance, and improve the hardness

Inactive Publication Date: 2018-03-30
蚌埠市嘉实机电设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is aimed at the existing problems: although the traditional steel mold has relatively high hardness and corrosion resistance, it can fully meet the processing performance requirements for injection molding and low-temperature metal processing, but for the processing of high-performance alloy mechanical parts, its The performance in terms of high temperature resistance and hardness is poor, and the shrinkage rate during high temperature processing is relatively large, resulting in the substandard compactness of processed parts; while the single-component alloy steel has a single improvement in mold performance, and cannot meet high temperature resistance and hardness at the same time. And processing performance requirements such as shrinkage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for manufacturing a crankshaft high-performance alloy mold, comprising the following steps:

[0017] (1) Initial smelting: Put carbon steel in a furnace to heat and melt, add carbon black to the molten steel, then refine at a constant temperature of 1214°C for 1.5 hours, then add mixed alloys for high-temperature fusion to obtain alloy molten steel;

[0018] (2) Forging: Cool the temperature of the furnace to 1173°C at a cooling rate of 11°C / min, keep the temperature at a constant temperature for 4.5 hours, and then refine at 917°C for 1.5 hours to obtain molten steel for forging;

[0019] (3) Casting molding: cast the forged alloy water, and keep the temperature at 916°C for 42min, then cool down at a rate of 6°C / min, and keep at 768°C and 643°C for 1.5h respectively, after processing and grinding, the alloy mold is made ;

[0020] (4) Quenching treatment: place the alloy mold in a high-temperature furnace for quenching treatment, treat it at 817°C for 2.5 ho...

Embodiment 2

[0026] A method for manufacturing a crankshaft high-performance alloy mold, comprising the following steps:

[0027] (1) Initial smelting: Put carbon steel in a furnace to heat and melt, add carbon black to molten steel, then smelt at a constant temperature of 1218°C for 2 hours, then add mixed alloys for high-temperature fusion to obtain alloy molten steel;

[0028] (2) Forging: Cool the temperature of the furnace to 1178°C at a cooling rate of 10-12°C / min, keep it at a constant temperature for 5 hours, and then refine it at 925°C for 2 hours to obtain molten steel for forging;

[0029] (3) Casting molding: casting the forging alloy water, and keeping the temperature at 928°C for 44min, then cooling down at a rate of 8°C / min, keeping at 775°C and 648°C for 2h respectively, after processing and grinding, the alloy mold is obtained;

[0030] (4) Quenching treatment: place the alloy mold in a high-temperature furnace for quenching treatment, treat it at 827°C for 3 hours, and th...

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Abstract

The invention discloses a manufacturing method of a crankshaft high-performance alloy mold. The manufacturing method is characterized by comprising the following steps of: (1) carrying out primary smelting, to be specific, putting carbon steel in a smelting furnace so as to heat and melt the carbon steel, and adding carbon black and mixed alloy to molten steel so as to carry out smelting; (2) forging, and smelting the molten steel respectively at the temperatures of 1170-1180 DEG C and 910-930 DEG C; (3) carrying out casting forming, to be specific, casting forged molten alloy, and carrying out staged temperature reduction; (4) carrying out quenching treatment, to be specific, putting the alloy mold in a high-temperature furnace to carry out quenching treatment; and (5) carrying out passivating treatment, to be specific, carrying out passivating treatment on the quenched alloy mold in a vacuum tank.

Description

technical field [0001] The invention belongs to the technical field of mold processing, and in particular relates to a method for manufacturing a crankshaft high-performance alloy mold. Background technique [0002] The crankshaft is an important part of the engine. It needs to bear the combined action of centrifugal force, gas inertial force and inertial force during the operation of the engine, so that the crankshaft is subjected to bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, as well as wear resistance and high temperature resistance; therefore, the crankshaft processing raw materials need high temperature resistance and strength, and need to be forged and shaped at high temperature for a long time. The mold processed without the crankshaft needs to have higher performance in terms of hardness, high temperature resistance, shrinkage, etc., in order to ensure that the crankshaft has higher processing performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/50C22C38/46C22C38/44C22C38/34C21C7/00C21D1/18C21D9/00C23C8/14
CPCC22C38/58C21C7/0025C21D1/18C21D9/0068C22C38/34C22C38/44C22C38/46C22C38/50C23C8/14
Inventor 赵大鹏
Owner 蚌埠市嘉实机电设备制造有限公司
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