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Hydraulic pump body casting process

A casting process and hydraulic pump technology, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems that traditional methods cannot satisfy the market, and achieve the effects of reducing the generation of waste products, ensuring quality, and reducing the generation of surface pores

Inactive Publication Date: 2015-09-16
SUZHOU JIN YUAN OIL MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of national economic development, casting, as one of the basic industries, plays an important role; among many material forming methods, casting has many advantages such as strong practicability, low cost, and strong operability; specific casting is applied to hydraulic systems For the casting process of the hydraulic pump body, the current traditional casting process design method still relies on the production experience accumulated by the technicians; with the development of the economy, the market competition is becoming more and more fierce, and the traditional method cannot meet the market demand more and more. A scientific and reliable casting process to replace the casting hydraulic pump body of the traditional casting process to improve product quality, save time, save energy and resources, and improve corporate competitiveness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a casting process for a hydraulic pump body, and the specific operation steps of the casting process are as follows:

[0039] (1) Make a mold with natural silica sand as the molding material, and send the prepared mold to an oven for heating at 110°C for 8 minutes. The natural silica sand has a particle size of 50 mesh, a mud content of ≤0.5%, and a moisture content of ≤ 0.5%, SiO 2 Content 97%;

[0040] (2) Flame baking and cleaning the selected casting raw materials, the casting raw materials are composed of 40% pig iron and 60% scrap steel;

[0041] (3) Send the casting raw materials to a 5t electric arc furnace for melting to obtain a casting raw material solution. The melting temperature is 1520°C. Adjust the chemical elements so that the contents of each chemical element in terms of mass percentage are as follows: C: 4%, Si: 3%, Mo : 1.5%, Cu: 1%, Ni: 1.0%, Cr: 0.5%, S: 0.07%, P: 0.12%, Mn: 0.6%, Ni: 0.7%, Sb: 0.03%, Sn: 0.05%, Mg : 0.0...

Embodiment 2

[0055] This embodiment provides a casting process for a hydraulic pump body, and the specific operation steps of the casting process are as follows:

[0056] (1) Use natural silica sand as the molding material to make a mold, and send the prepared mold to an oven for heating at 100°C for 12 minutes. The natural silica sand has a particle size of 40 mesh, a mud content of ≤0.5%, and a moisture content of ≤ 0.5%, SiO 2 Content 95%;

[0057] (2) Flame baking and cleaning the selected casting raw materials, the casting raw materials are composed of 65% pig iron and 35% scrap steel;

[0058] (3) Send the casting raw materials to a 5t electric arc furnace for melting to obtain a casting raw material solution. The melting temperature is 1580°C. Adjust the chemical elements so that the contents of each chemical element in terms of mass percentage are as follows: C: 5%, Si: 1%, Mo : 1.2%, Cu: 3%, Ni: 0.5%, Cr: 1.0%, S: 0.05%, P: 0.10%, Mn: 0.8%, Ni: 0.5%, Sb: 0.05%, Sn: 0.03%, Mg : ...

Embodiment 3

[0072] This embodiment provides a casting process for a hydraulic pump body, and the specific operation steps of the casting process are as follows:

[0073] (1) Make a mold with natural silica sand as the molding material, and send the prepared mold to an oven for heating at 120°C for 10 minutes. The natural silica sand has a particle size of 70 mesh, a mud content of ≤0.5%, and a moisture content of ≤ 0.5%, SiO 2 Content 96%;

[0074] (2) The selected casting raw materials are flame-baked and cleaned, and the casting raw materials are composed of 55% pig iron and 45% scrap steel;

[0075] (3) Send the casting raw materials to a 5t electric arc furnace for melting to obtain a casting raw material solution. The melting temperature is 1520-1580°C. Adjust the chemical elements so that the contents of each chemical element are as follows in terms of mass percentage: C: 6%, Si: 4% , Mo: 0.8%, Cu: 2%, Ni: 0.8%, Cr: 0.8%, S: 0.03%, P: 0.13%, Mn: 0.5%, Ni: 0.9%, Sb: 0.02%, Sn: 0.04...

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Abstract

The invention discloses a hydraulic pump body casting process, the process steps are as follows: moulding-casting material pretreatment-melting-spheroidizing treatment-pouring-heat treatment-stabilizing treatment-gas nitriding treatment-machining-inspection and storing-finished product; and the casting process is simple and practical, and low in cost, the casted hydraulic pump body is dense in tissue, free of shrinkage porosity and cavity, white cast and crack defects, good in tensile strength, and high in hardness.

Description

Technical field [0001] The invention involves a processing process of a hydraulic part, which specifically involves the casting process of a hydraulic pump body. Background technique [0002] In the process of national economic development, casting as one of the basic industries plays an important role; among the many materials forming methods, the casting has many advantages such as strong practicality, low cost, and strong operability.For the casting process of the hydraulic pump body, the current traditional casting process design method is still based on the production experience accumulated by the technicians; with the development of the economy, the market competition is becoming more intense, and the traditional methods are increasingly not to meet the needs of the market.The scientific and reliable casting process replaces the casting hydraulic pump of the traditional casting process to improve the quality of the product, save time, save energy, resources, and improve cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08C21D5/00B22C9/22
Inventor 袁增泉孙创
Owner SUZHOU JIN YUAN OIL MACHINERY
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