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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

Inactive Publication Date: 2019-08-30
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing special-shaped curved holes in metals, so as to solve the difficulty in processing the special-shaped curved holes inside mechanical parts by traditional drilling and other machining methods in the prior art, especially for irregular curved holes. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of the special-shaped curved hole in the metal of the present invention is implemented according to the following steps:

[0023] Step 1: Prepare foam shaped rods that conform to the desired cell shape

[0024] According to the cross-sectional shape and size of the special-shaped bending hole required in the metal part and the direction of the hole, the foam plastic rod is shaped, bent and cut, and then evenly coated with a layer of PVB rosin composite adhesive on the incision , Bonding and splicing each section of foam plastic rod into a rod consistent with the required hole shape. Wherein the cross-sectional shape of the foamed plastic special-shaped rod can be one or a combination of circular, oval, square, triangular, hexagonal, or other arbitrary shapes.

[0025] Step 2: Prepare Metal Powder Coating

[0026] Weigh the following components according to mass percentage: metal alloy powder (high-alloy powder with the same or different composit...

Embodiment 1

[0033] Step 1: Prepare foam shaped rods that conform to the desired cell shape

[0034] According to the triangular cross-sectional shape and size of the special-shaped bending hole in the metal part and the direction of the hole, etc., the foam plastic rod is shaped, bent and cut, and then a layer of PVB rosin composite adhesive is evenly applied to the cut. Bonding agent, bonding and splicing each section of foam plastic rods into rods consistent with the required hole shape.

[0035] Step 2: Prepare Metal Powder Coating

[0036] Weigh the following components according to mass percentage: W18Cr4V alloy powder 50%, binder aluminum sol 5%, adhesive polyvinyl formal 1%, suspending agent carboxymethylcellulose sodium 0.5%, coupling agent titanate 1 %, deionized water 42.5%, total 100%;

[0037] Mix W18Cr4V alloy powder with aluminum sol, polyvinyl formal, sodium carboxymethyl cellulose, and coupling agent titanate evenly, then add deionized water to dissolve, stir for 35 minu...

Embodiment 2

[0043] Step 1: Prepare foam shaped rods that conform to the desired cell shape

[0044] According to the square cross-sectional shape and size of the special-shaped bending hole in the metal part and the direction of the hole, etc., the foam plastic rod is shaped, bent and cut, and then a layer of PVB rosin composite adhesive is evenly applied to the cut. Bonding agent, bonding and splicing each section of foam plastic rods into rods consistent with the required hole shape.

[0045] Step 2: Prepare Metal Powder Coating

[0046] Weigh the following components according to mass percentage: W6Mo5Cr4V2 alloy powder 60%, binder aluminum sol 6%, adhesive polyvinyl formal 1%, suspending agent carboxymethylcellulose sodium 0.5%, coupling agent titanate 1 %, deionized water 31.5%, total 100%;

[0047] Mix W6Mo5Cr4V2 alloy powder with aluminum sol, polyvinyl formal, sodium carboxymethyl cellulose, and coupling agent titanate evenly, then add deionized water to dissolve, stir for 40 mi...

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PUM

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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.

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

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22D27/18
CPCB22C9/046B22D27/18
Inventor 屈银虎何炫张学硕梅超袁建才左文婧
Owner XI'AN POLYTECHNIC UNIVERSITY
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