Hydraulic valve body with complex runner and casting method thereof
A technology for hydraulic valves and valve bodies, which is applied in the direction of fluid pressure actuating devices, casting molds, valve details, etc. It can solve the problems of long flow channels, easy breakage and complexity of flow channels, and achieve reasonable design, perfect appearance, and ingenious ideas Effect
Pending Publication Date: 2020-08-18
南通华东油压科技有限公司
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Problems solved by technology
[0002] The material of the project product is ductile iron, the casting mold is large in size, the internal flow channel of the casting is long and complex, and the flow channel in the inner cavity has almost no support points Air bubbles cause the product to leak under pressure
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[0036] Such as Figure 1-7As shown, a hydraulic valve body with complex flow channels, the valve body 1 includes six faces of front, rear, left, right, upper and lower; the front of the valve body 1 is provided with seven flow channel ports, and the valve body 1 There are five flow channel ports at the back, three flow channel ports are provided on the left side of the valve body 1, two flow channel ports are provided on the right side of the valve body 1, and two flow channel ports are provided on the valve body 1; nine flow channel ports are arranged inside the valve body 1 Longitudinal runners, five transverse runners and two vertical runners, of which three longitudinal runners are main runners. The main channels are arranged horizontally and distributed in the valve body, from left to right are the first main channel 2-1, the second main channel 2-2, the third main channel 2-3; the first main channel 2-1, the second main channel The front ends of the channel 2-2 and the ...
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Abstract
The invention relates to a hydraulic valve body with a complex runner and a casting method thereof. The casting method adopts a resin sand shell mold covering process, and the casting method comprisesthe following steps of 1), manufacturing a core; 2), molding; 3), smelting; and 4), casting, during core manufacturing, firstly, selecting high-strength mud core sand to make a mud core, placing a hollow piped in a main hole to serve as a core bar, combining the mud cores in multiple parts, coating the surface of the mud core with a coating, controlling the adjusted baume degree to be adjusted to42-49 baume degrees, during casting, dispersedly feeding water. The valve body formed by casting is perfect in appearance, free of core breakage, air holes and other defects and free of the shrinkagecavity level phenomenon.
Description
technical field [0001] The invention relates to the field of casting technology, in particular to a hydraulic valve body with complex flow channels and a casting method thereof. Background technique [0002] The material of the project product is ductile iron, the casting mold is large in size, the internal flow channel of the casting is long and complex, and the flow channel in the inner cavity has almost no support points. The molten iron temperature is slightly higher and it is easy to break and sinter, which will lead to core breakage defects, easy to produce shrinkage cavities, Air bubbles cause the product to leak under pressure. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a hydraulic valve body with complicated flow channels and its casting method. [0004] Technical scheme of the present invention: [0005] A hydraulic valve body with complex flow passages, the valve body includes six surfaces: front, re...
Claims
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IPC IPC(8): F15B13/02F16K27/00B22C9/24B22C9/02B22C9/10
CPCB22C9/02B22C9/10B22C9/24F15B13/02F16K27/00
Inventor 马建华吴小江丁洋张剑云
Owner 南通华东油压科技有限公司