Manufacturing technology of oil inflow valve casting

A manufacturing process and oil inlet valve technology, which is applied in the field of oil inlet valve casting manufacturing technology, can solve the problems of inability to set up gas outlet risers, inability to place core bones, easy formation of air bubbles, etc. Effect

Inactive Publication Date: 2015-10-28
南通华东油压科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] At present, the internal oil channel formed by the shell mold and the sand core of the oil inlet valve casting manufacturing process is small, the sand core is easy to break, and the core bone cannot be placed, and because the main channel of the product is small, the gas outlet riser cannot be installed, so Bubble

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  • Manufacturing technology of oil inflow valve casting
  • Manufacturing technology of oil inflow valve casting

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Embodiment Construction

[0019] A manufacturing process for oil inlet valve castings, the innovation of which is: the steps are as follows

[0020] 1) First, use metal to make the metal template required for the oil inlet valve;

[0021] 2) Next, heat the metal template to 180~280°C, and then cover the mold sand hardened by heat on the metal template to solidify the molding sand;

[0022] 3) Then, heat and solidify the molding sand to form the upper and lower shells 2. The top of the upper shell 2 has several frustum-shaped cavities for forming bosses on the surface of the valve body. The upper shell above the cavities Type 2 is provided with a vertical vent connecting the cavity and the outside of the shell, and on the upper surface of the upper shell there are several horizontal diversion grooves connecting the upper port of the vertical vent;

[0023] 4) Then, form the sand core 1 of the oil inlet valve through chromite sand, and set the sand core 1 horizontally in the shell type 2, and form an o...

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Abstract

The invention relates to a manufacturing technology of an oil inflow valve casting. The manufacturing technology includes the steps that firstly, a metal mold plate required by an oil inflow valve is made of metal; secondly, the metal mold plate is heated to 180-280 DEG C; the metal mold plate is covered with molding sand which is hardened when being heated, and the molding sand is cured; the molding sand is heated and cured, and an upper shell mold and a lower shell mold are formed; four exhausting holes, a pouring gate and a boss are arranged on the shell molds; a riser runner is arranged in the boss; a water outflow groove is further arranged on the shell molds, and the four exhausting holes are connected into a whole through the water outflow groove and connected to the riser runner through the water outflow groove; a sand core of the an oil inflow valve is formed through chromite sand and fixed in the shell molds; and a cavity of the oil inflow valve is formed after the shell molds and the sand core are closed. The manufacturing technology has the beneficial effects that according to the technical scheme, due to the fact a main hole flow channel of the product is small and the exhausting holes cannot be arranged, the body riser runner must be arranged on the shell mold boss; the exhausting capacity is improved; and air holes are prevented.

Description

technical field [0001] The invention relates to a casting manufacturing process, in particular to an oil inlet valve casting manufacturing process. Background technique [0002] At present, the internal oil channel formed by the shell mold and the sand core of the oil inlet valve casting manufacturing process is small, the sand core is easy to break, and the core bone cannot be placed, and because the main channel of the product is small, the gas outlet riser cannot be installed, so Bubbles are easy to form on the surface of the casting. Therefore, it is urgent to develop a manufacturing process for the oil inlet valve casting that the sand core is not easy to break and has no bubbles on the surface of the casting. After searching, no technical solution identical or similar to the present invention has been found. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a manufacturing process of an oil inlet valve cast...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/06
Inventor 范伟伟黄金波
Owner 南通华东油压科技有限公司
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