Manufacturing method of metal inner special-shaped bent hole

A special-shaped and bending technology, which is used in metal processing equipment, casting molding equipment, casting molds, etc., can solve the problems of difficult to process special-shaped curved holes, irregular curved holes cannot be processed, etc., to improve fatigue strength, wide practical range, The effect of increasing surface strength and hardness
CN110180993AInactive Publication Date: 2019-08-30XI'AN POLYTECHNIC UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN POLYTECHNIC UNIVERSITY
Publication Date
2019-08-30
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a manufacturing method of a metal inner special-shaped bent hole. The manufacturing method comprises the following steps of, 1, according to the sectional shape and size of therequired special-shaped bent hole in a metal piece and the direction of the hole, carrying out shape machining, bending forming and cutting treatment on a foamed plastic bar, uniformly coating a layer of PVB rosin composite adhesive on a notch of the foamed plastic bar, and bonding and splicing each section of the foamed plastic bar into a bar consistent with the shape of the required hole; 2, weighing the following components in percentage by mass: metal alloy powder, a binder, an adhesive, a suspending agent, a coupling agent and deionized water to prepare a metal powder coating, specifically, the components account for 100% in total; 3, coating the metal powder coating, and then drying in a thermostat; and 4, pouring the liquid metal, cooling and solidifying to obtain a surface alloyedspecial-shaped bent hole metal piece. The method is simple, convenient and feasible.
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Description

technical field

[0001] The invention belongs to the technical field of casting, and relates to a method for preparing a special-shaped curved hole in a metal. Background technique

[0002] Casting is the technology of injecting liquid metal into the mold cavity and then solidifying to obtain metal castings. It is one of the main methods to obtain mechanical products and parts. It is widely used in pillar industries such as aviation, aerospace, petrochemical, metallurgy, automobile and shipbuilding. Casting molding technology occupies an extremely important position in the machinery manufacturing industry, and the application of various advanced casting technologies has brought new vitality to the manufacturing industry.

[0003] In actual production and application, mechanical parts often need to process holes. At present, the most common method for processing a large number of holes for various parts is drilling. The technological process is generally drilling, reaming, rea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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