Casting method for static vanes of rotating vane-type steering engine

Abstract

The invention relates to a casting method for mechanical parts, which is a casting method for the stationary vane of a rotary vane steering gear. The split core casting method is used to reduce casting defects such as shrinkage cavities and porosity caused by thermal shrinkage inside the casting; multiple stationary vanes are used for casting At the same time, through the cooperation of the circular casting mold and the cuboid core, the shape of the stationary vane can be roughly cast, reducing the machining process; the bottom pouring method is used to fill the mold smoothly, so that the liquid state rises steadily and the structure of the casting is improved. Fine density and uniformity. The invention can improve the quality of the casting, improve the mechanical performance and mechanical performance, reduce the material cost, save the machining time, and reduce the machining process.

Description

Technical field [0001] The present invention involves a mechanical parts casting method. Specifically, it is a rotor -type steering engine static leaf casting method. Background technique [0002] Static leaf parts are important parts of rotor steering gear. Its material is cast iron and belongs to a single irregular parts.The blank of cast iron parts usually has defects such as shrinking holes, flushing, and sandy eyes. If the defects of the rough can be found in time, the production cost can be effectively reduced, the manufacturing cycle is shortened, the number of sediment disassembly is reduced, and the qualification rate of assembly is used.However, it is difficult to find rough defects when testing the quality of the casting.Only by improving the casting method can we greatly improve the quality of the castings. [0003] At present, there are two types of casting methods for quiet leaves: First, single casting, which is not operable, is limited by the quality of casting ca...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two casting methods for the stationary vane: 1. Single-piece casting, which has poor operability and is limited by the quality of the casting, which causes many difficulties for machining: the machining process is not stereotyped, and the clamping method is not fixed. The shape and position tolerance of the parts cannot be well guaranteed, resulting in high scrap rate

2. Multi-piece cylindrical casting: according to the manufacturing process requirements, draw a central cross line on the cylindrical casting, and draw a number of stationary vane outline lines in equal parts, cut into single pieces by wire cutting, and then mill, bore and drill However, during wire cutting, it is often found that there are large casting shrinkage cavities on both sides of the stator vane, resulting in a high scrap rate

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