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High-creep-ratio and high-strength hydraulic motor body shell blank casting technology

A hydraulic motor and casting process technology, applied in the field of motor casting, can solve the problems affecting the casting tensile strength and hardness of the hydraulic motor body shell, reduce the absorption rate of creeping agent, etc., and achieve the effect of improving the stirring efficiency and improving the fusion.

Active Publication Date: 2019-08-27
ANHUI DATIAN CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is mainly used to solve the problem that when the vermicular graphite cast iron is produced by the flushing method in the casting process, the existing vermicular graphite cast iron will make the molten iron and the vermicular agent collide relative to each other, so that the vermicular agent does not detonate at the bottom, reducing the temperature of the molten iron. The absorption rate of the vermicular agent leads to poor creep, which affects the casting tensile strength and hardness of the hydraulic motor shell

Method used

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  • High-creep-ratio and high-strength hydraulic motor body shell blank casting technology
  • High-creep-ratio and high-strength hydraulic motor body shell blank casting technology
  • High-creep-ratio and high-strength hydraulic motor body shell blank casting technology

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Embodiment Construction

[0026] use Figure 1-Figure 5 A process for casting a high-creeping rate and high-strength hydraulic motor body shell blank according to an embodiment of the present invention will be described as follows.

[0027] Such as Figure 1-Figure 5 As shown, the process for casting a high-creeping rate and high-strength hydraulic motor body shell blank according to the present invention includes the following steps:

[0028] S1: Put the prepared vermicularizing agent and inoculant into the molten iron ladle, and place them at the bottom of the molten iron ladle, then put the vermicularizing device into the molten iron ladle, and use the isolation mechanism at the lower end of the vermicularizing device to treat the vermicularizing agent Cover with inoculant;

[0029] S2: After the vermicularizing agent and inoculant in S1 are covered and wrapped by the isolation mechanism, pass the molten iron into the molten iron ladle through the upper end of the molten iron ladle, and scatter the molte...

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Abstract

The invention belongs to the technical field of motor casting and particularly relates to a high-creep-ratio and high-strength hydraulic motor body shell blank casting technology. A creeping device isincluded and comprises a rotating rod, a rotating block, an isolation mechanism and a scattering mechanism. The rotating rod is arranged in a ladle, and the isolation mechanism is arranged at the lower end of the rotating rod. The rotating block is fixedly connected to the upper end of the rotating rod, and the scattering mechanism is arranged at the middle portion of the rotating rod. The rotating block is arranged at the upper side of the interior of the ladle. The isolation mechanism comprises an installation ring, a connecting rod, a moving block and a connecting block. The connecting rodis fixedly connected to the outer surface of the installation ring. The high-creep-ratio and high-strength hydraulic motor body shell blank casting technology is mainly used for solving the problemsthat in the casting technology at present, when a crushing method is commonly used for producing vermicular graphite cast iron, molten iron and a vermicular agent can generate relative impacts, the vermicular agent is not detonated at the bottom or is detonated too early, the absorption rate of the molten iron on the vermicular agent is reduced, creeping is poor, and tensile strength and hardnessof a hydraulic motor body shell are affected.

Description

Technical field [0001] The invention belongs to the technical field of motor casting, and specifically is a process for casting a hydraulic motor body shell blank with high creeping rate and high strength. Background technique [0002] Vermicularizing agent is an additive added to molten iron to obtain vermicular graphite structure. At present, composite alloy vermicularizing agents containing multiple elements are widely used. Commonly used are rare earth-silicon-calcium, rare earth-magnesium-titanium, rare earth-magnesium and other alloys. Vermicular graphite cast iron with excellent comprehensive properties can be obtained after the addition of modifier exceeds a certain critical point, and can only be stabilized at one Not within a wide range. This modifier is called a creeping agent. Correct selection and control of the amount of vermicularizing agent are the primary conditions for the stable production of vermicular graphite cast iron. The amount of vermicularizing agent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00C21C1/10
CPCB22D1/00C21C1/10Y02P10/143Y02P10/20
Inventor 吴元立徐祥俊
Owner ANHUI DATIAN CASTING
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