Casting process for guide sleeve of hydraulic oil cylinder

A casting process and hydraulic cylinder technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., to achieve the effect of improved efficiency, smooth surface and less sticky sand

Inactive Publication Date: 2021-06-08
JIANGSU BOZHIWANG AUTOMATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of high strength and lightweight engines in the excavator and diesel engine industries, excavators and diesel engines put forward higher and higher requirements for the dimensional accuracy, structure compactness and surface quality of cast guide sleeves. The manufacturing process of the guide sleeve is difficult to meet the needs of the market, so there is an urgent need for a guide sleeve casting process with good compactness, less sticky sand, and a smoother surface

Method used

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Embodiment Construction

[0017] The following will be described in detail so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] A casting process for a guide sleeve of a hydraulic cylinder, comprising the following steps:

[0019] a. Manufacture the steel sleeve and the outer sand core according to the three-dimensional modeling and put the inner sand core in the outer sand core, the steel sleeve is a seamless steel pipe, both the outer sand core and the inner sand core are coated with paint, and the outer sand core Both the pearl sand and the inner sand core are mixed with pearl sand, quartz sand and coated sand. The pearl sand is 70 / 140 grains, and the quartz sand is 40 / 70 grains. After the pearl sand and quartz sand are mixed once, add 1-2 parts of industrial alcohol with a purity of more than 95%, 1-2 parts of polyethylene oxide, and 1-2 parts of 50...

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PUM

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Abstract

The invention relates to a casting process for a guide sleeve of a hydraulic oil cylinder. The casting process comprises the following steps of manufacturing a sand core, drying the sand core, adding raw materials, melting molten iron, removing an outer sand core and an inner sand core, carrying out rough shot blasting by a shot blasting machine, carrying out manual polishing and fine polishing and manual grinding to obtain a casting, and carrying out sample detection and high-definition endoscope detection to obtain a qualified casting. By improving the formula and the working process, the cast guide sleeve is good in compactness, little in burnt-on sand and smooth in surface, the percent of pass is greatly increased, fine machining of precision machinery is facilitated, meanwhile, due to the fact that the burnt-on sand is little and the surface is smooth, the labor cost of shot blasting and grinding is greatly reduced, the quality is improved, and the efficiency is obviously improved.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a casting process for hydraulic cylinder guide sleeves. Background technique [0002] With the development of high strength and lightweight engines in the excavator and diesel engine industries, excavators and diesel engines put forward higher and higher requirements for the dimensional accuracy, structure compactness and surface quality of cast guide sleeves. The manufacturing process of the guide sleeve is difficult to meet the needs of the market, so there is an urgent need for a guide sleeve casting process with good compactness, less sticky sand, and a smoother surface. Contents of the invention [0003] The object of the present invention is to provide a casting process for hydraulic cylinder guide sleeves with good compactness, less sticky sand and smoother surface. [0004] The present invention is achieved through the following technical solutions: a casting process f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08B22C9/02B22C9/22B22C9/10B22C1/00
CPCB22C1/00B22C9/02B22C9/103B22C9/22C22C33/08C22C37/10
Inventor 司向良
Owner JIANGSU BOZHIWANG AUTOMATION EQUIP CO LTD
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