Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for preparing and demolding a master mold for low-melting-point metal arc spraying molds

A low-melting-point metal and arc spraying technology, which is applied in metal material coating process, fusion spraying, coating, etc., can solve the problems of high cost, low cost, and easy deformation of resin parts, and achieve simple manufacturing process and short manufacturing cycle The effect of short and low production energy consumption

Inactive Publication Date: 2016-07-06
XI AN JIAOTONG UNIV +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For low-melting point metal arc spraying molding technology, such as spraying aluminum, zinc, zinc-aluminum alloy, etc., there are many types of master mold materials that can be used. At present, there are mainly rapid prototype resin parts, gypsum materials and medium density boards, etc., but resin parts It is easy to deform and requires additional support and reinforcement. The process is more complicated and the cost is higher; the cost of gypsum materials and MDF is lower, and the final shape is obtained by cutting. However, gypsum is corrosive to machine tool metal, which seriously threatens the use of machine tools At the same time, due to the complex mold surface and the curing shrinkage of the sprayed shell, these three types of materials currently have the problem of difficult demoulding, and all of them are destructive demoulding, and the master mold material cannot be reused
It is time-consuming and labor-intensive to manually remove the master mold, and it is easy to damage the profile when the operation is improper. Therefore, research on the master mold preparation and demoulding method suitable for the rapid mold release of low melting point metal arc spraying is to improve the efficiency of metal arc spraying rapid mold making. Reduce costs and realize environmental protection Problems that need to be solved urgently

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing and demolding a master mold for low-melting-point metal arc spraying molds
  • A method for preparing and demolding a master mold for low-melting-point metal arc spraying molds
  • A method for preparing and demolding a master mold for low-melting-point metal arc spraying molds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Make a stamping die master mold for a car cover part, the size is: 800mm×600mm×150mm.

[0044] Including the following steps:

[0045] 1) Paraffin wax modification: use medium temperature paraffin wax 162 as the raw material, stearic acid and 3mm chopped glass fiber as the modified material, the mass percentage of each raw material is: 10% stearic acid, 3mm chopped glass fiber Glass fiber 1%, the rest is medium temperature paraffin 162;

[0046] 2) Stir evenly: first heat the medium-temperature paraffin 162 to 90 degrees to melt it with a heating device, add molten stearic acid and chopped glass strands to it, stir evenly, observe that there are few bubbles and the distribution of glass strands is relatively uniform, and the modified product is obtained. paraffin;

[0047] 3) Nail the frame: slightly enlarge the size of the required master mold to leave enough processing and spraying allowance, nail a frame of 820×620×155mm according to the size of the mold, and place...

Embodiment 2

[0054] Make the master mold of stamping die for the cover part of a certain car model, the size is: 1000mm×800mm×200mm.

[0055] Including the following steps:

[0056] 1) Paraffin wax modification: Use medium temperature paraffin wax 162 as the raw material base material, polyethylene and 3mm chopped glass filament as the modified material, the mass percentage of each raw material used is: polyethylene 10%, chopped glass filament 3mm in length 1 %, the rest is medium temperature paraffin 162;

[0057] 2) Stir evenly: first heat the medium-temperature paraffin 162 to 90 degrees to melt it with a heating device, add molten polyethylene and chopped glass strands to it, stir evenly, observe that there are few bubbles and the glass strands are evenly distributed, and the modified paraffin wax is obtained ;

[0058] 3) Nail the frame: slightly enlarge the size of the required master mold so as to leave enough processing and spraying allowance, nail a frame of 1020×820×205mm accor...

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
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation and stripping method of a female mold of a low-melting-point metal arc spraying mold, which comprises the following steps: heating paraffin to a molten state, adding stearic acid or polyethylene and chopped glass silk, and stirring uniformly to obtain modified paraffin; adding the modified paraffin into a mold dimension frame, curing, and removing the frame to obtain a modified paraffin female mold; machining the modified paraffin female mold to obtain a required spraying molding surface; carrying out coarsening treatment on the modified paraffin female mold surface with the spraying molding surface to obtain a female mold matrix; and spraying the female mold matrix, heating the sprayed female mold matrix until the modified paraffin is in a molten state, and pouring to implement stripping between the female mold and the spraying shell. The sprayed female mold has the advantages of favorable machinability and convenient and simple manufacturing technique, can be quickly stripped from the spraying shell in a heating mode without damaging the surface of the spraying shell, saves the stripping time and lowers the stripping difficulty.

Description

【Technical field】 [0001] The invention relates to low-melting-point metal arc spraying rapid mold manufacturing technology, in particular to a master mold preparation and demoulding method for low-melting-point metal arc spraying molds. 【Background technique】 [0002] With the further integration of the global economy, the competition in the manufacturing industry has become increasingly fierce. How to shorten the production cycle and reduce costs has become the primary concern of manufacturers. The gradual advent of the era of multi-variety and small batches makes enterprises require mold manufacturing to ensure that new products can quickly occupy the market, and the development of fast and economical molds has attracted more and more attention. For example, epoxy, polyester or mixed with metal, ceramics, glass, etc. The rapid soft mold made of materials can be used for injection molding of hundreds of pieces and trial production of automobile panels. Its main features a...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/131B22F3/115
Inventor 吴华英魏润强王永信卢秉恒郭成马逸飞
Owner XI AN JIAOTONG UNIV