Manufacturing method for die-casting machine injection punch

A technology of injection punch and manufacturing method, which is applied in the field of parts for die casting, can solve the problems affecting the production efficiency and production cost of die casting machines, the service life of injection punches of die casting machines is low, and the manufacturing process is complicated, etc., to achieve improvement Stability and solid solution strengthening ability, improved service life and die casting production efficiency, and improved stability

Active Publication Date: 2014-11-19
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a method for manufacturing the injection punch of a die-casting machine, which is a method for manufacturing the injection punch of a wear-resistant die-casting machine containing carbide and isothermally quenched ductile iron, which overcomes the problems of existing die-casting machines. The injection punch of the die-casting machine produced by the manufacturing method of the injection punch has a low service life, or / and the manufacturing process is complicated, or / and the price is high, resulting in a low cost performance of the injection punch of the die-casting machine, which seriously affects the Defects in production efficiency and production cost of die casting machines

Method used

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  • Manufacturing method for die-casting machine injection punch

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first step, raw material configuration:

[0032] According to the weight percentage of raw material elements: 3.8% C, 2.6% Si, 0.8% Mn, 1.2% Cr, 0.2% Mo, 0.1% V, 0.06% P, 0.02% S and the rest are Fe, weigh the required amount of raw materials : pig iron, steel scrap, ferrosilicon, ferromanganese, ferrochrome, ferromolybdenum and ferrovanadium;

[0033] The second step, the smelting of raw materials:

[0034] Put the raw materials configured in the first step into an intermediate frequency induction furnace for smelting until all the raw materials are melted and the temperature of the molten iron is raised to 1500°C;

[0035] The third step, spheroidization treatment and inoculation treatment:

[0036] Weigh the rare earth magnesium ferrosilicon nodulizer which accounts for 1.2% by weight of the molten iron in the second step and the silicon-barium alloy inoculant which accounts for 0.8% by weight of the molten iron in the second step, and add them together to the ...

Embodiment 2

[0042] The first step, raw material configuration:

[0043] According to the weight percentage of raw material elements: 3.6% C, 2.7% Si, 1.0% Mn, 1.0% Cr, 0.3% Mo, 0.3% V, 0.05% P, 0.015% S and the rest are Fe, weigh the required amount of raw materials : pig iron, steel scrap, ferrosilicon, ferromanganese, ferrochrome, ferromolybdenum and ferrovanadium;

[0044] The second step, the smelting of raw materials:

[0045] Put the raw materials configured in the first step into an intermediate frequency induction furnace for melting until all the raw materials are melted and the temperature of the molten iron is raised to 1530°C;

[0046] The third step, spheroidization treatment and inoculation treatment:

[0047] Weigh the rare earth magnesium ferrosilicon nodulizer which accounts for 1.3% by weight of the molten iron in the second step and the silicon-barium alloy inoculant which accounts for 0.6% by weight of the molten iron in the second step, and add them together to the ...

Embodiment 3

[0053] The first step, raw material configuration:

[0054] According to the weight percentage of raw material elements: 3.5% C, 2.8% Si, 1.2% Mn, 0.7% Cr, 0.4% Mo, 0.2% V, 0.03% P, 0.01% S and the rest is Fe, weigh the required amount of raw materials : pig iron, steel scrap, ferrosilicon, ferromanganese, ferrochrome, ferromolybdenum and ferrovanadium;

[0055] The second step, the smelting of raw materials:

[0056] Put the raw materials prepared in the first step into an intermediate frequency induction furnace for smelting until all the raw materials are melted and the temperature of the molten iron is raised to 1550°C;

[0057] The third step, spheroidization treatment and inoculation treatment:

[0058] Weigh the rare earth magnesium ferrosilicon nodulizer which accounts for 1.6% by weight of the molten iron in the second step and the silicon-barium alloy inoculant which accounts for 0.4% by weight of the molten iron in the second step, and add them together to the sph...

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Abstract

The invention discloses a manufacturing method for a die-casting machine injection punch and relates to parts for pressure casting. The manufacturing method is used for manufacturing the wear-resistant die-casting machine injection punch containing carbide isothermal quenching nodular cast iron. The manufacturing method comprises the steps that raw materials with the required quantity are weighed, wherein the raw materials comprise pig iron, steel scraps, ferrosilicon, ferromanganese, ferrochromium, ferromolybdenum and ferrovanadium; the raw materials are subjected to smelting, nodulization with rare earth ferrosiliconmagnesium nodulizing agents, inoculation with silicon-barium alloy inoculating agents, molding by casting and thermal quenching treatment to obtain the finished die-casting machine injection punch containing the components, by mass, 3.5-3.8% of C, 2.6-2.8% of Si, 0.8-1.2% of Mn, 0.7-1.2% of Cr, 0.2-0.4% of Mo, 0.1-0.3% of V, 0.03-0.06% of P, 0.01-0.02% of S, 0.03-0.05% of Mg, 0.01-0.02% of Ce and the rest Fe. The die-casting machine injection punch is good in overall performance, long in service life and high in performance cost ratio.

Description

technical field [0001] The technical solution of the invention relates to parts for die casting, in particular to a method for manufacturing the injection punch of a die casting machine. Background technique [0002] Die casting is an advanced casting method that develops rapidly in modern metal processing technology. It has the advantages of high production efficiency, simple process, high tolerance level of castings, low surface roughness and good mechanical properties. It is used in automobiles, home appliances and communications. and other industries have been widely used. The injection punch of die-casting machine is an extremely important key component for transmitting pressure in die-casting production, and its quality and service life will directly affect the production efficiency and production cost of die-casting machine. During die-casting production, the injection punch of the die-casting machine runs at a speed of about 7-10m / s and about 2×10 3 The MPa high pr...

Claims

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Application Information

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IPC IPC(8): B22D17/20C22C37/04C22C37/10
Inventor 刘金海江晗赵雪勃董天顺李国禄张建军
Owner HEBEI UNIV OF TECH
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