Mould castings method

A special shape and formula technology, which is applied to casting molding equipment, casting molds, cores, etc., can solve the problems of time-consuming, labor-intensive, labor-intensive, etc., and achieve the effect of improving surface finish, improving dimensional accuracy, and using less equipment

Inactive Publication Date: 2005-01-12
齐志威
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing casting methods can be divided into two categories, one is ordinary sand casting methods, the other is special casting, pressure casting, investment casting, metal casting, ceramic casting, centrifugal casting, squeeze casting and other methods. Regardless of the two types of casting methods, the pattern must be made first, such as metal molds, wooden molds, ceramic molds, etc. Pattern making is the key to production, and the key technology of pattern making is to ensure that there is no back hook, Each angle cannot be greater than 90°, and each angle must be made into R 2 -R 5 The rounded corners and opening and closing patterns must be reasonable, otherwise it will directly affect the demoulding, or even fail to demould. Because the existing technology cannot solve the complex special-shaped patterns and casting demoulding process, it is impossible to produce resin materials and high-density wood

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
  • Mould castings method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The special-shaped casting method includes the following technological process:

[0032] 1. Using real objects as models

[0033] 1. Glue to make negative mold

[0034] Apply silicone oil (release agent) on the physical model, and then add 2.8% additive p-phenylenediamine benzene solution in the room temperature vulcanized silicone rubber, so that the hardness of the room temperature siliconized vulcanized rubber reaches 30°. Then apply room temperature vulcanized rubber with a hardness of 30° on the physical model, reinforce the gypsum shape outside the mold before demoulding, and finally demould.

[0035] 2. Glue to make positive mold

[0036] Apply a silicone oil release agent to the well-made silicone female mold, apply room temperature vulcanized silicone rubber with the same hardness of 40° on the inner surface of the female mold, and reinforce the gypsum appearance on the outside, and release the mold after the silicone is completely vulcanized.

[0037] 3. Ma...

Embodiment 2

[0046] The casting method of embodiment two is basically the same as that of embodiment one, the difference is that in the deployment of the hardness of the room temperature vulcanized silicone rubber, 4% of the p-phenylenediamine solution additive is added to the room temperature vulcanized rubber to make the room temperature vulcanized silicone rubber The hardness reaches 50°; in the manufacture of alloy molds, the melting point of the alloy mold is 90°C, and the corresponding alloy formula is 47% bismuth, 27% lead, and 26% tin; in the manufacture of wax molds, the melting point of the wax mold material is 100°C, The formula of the molding material is 70% of paraffin wax, 20% of montan wax, 5% of polymerized rosin, and 5% of low molecular weight polyethylene.

Embodiment 3

[0048] The casting method of embodiment three is basically the same as that of embodiment one, the difference is that in the hardness of the room temperature vulcanized silicone rubber, the content of the added p-phenylenediamine solution is 5%, and the room temperature vulcanized silicone rubber prepared is The hardness reaches 70°; in the manufacture of alloy molds, the melting point of the alloy mold is 190°C, and the corresponding alloy formula is 63% tin and 37% lead; in the manufacture of wax molds, the melting point of the wax mold material is 140°C, and the corresponding wax The molding material formula is 50% rosin, 30% polystyrene and 20% ozokerite.

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
Melting pointaaaaaaaaaa
Melting pointaaaaaaaaaa
Login to view more

Abstract

A method for casting the shaped workpiece includes preparing model, preparing female mould, preparing male mould, preparing alloyor wax mould, pressure casting, heating while demoulding, and recovering alloy or wax. The process for preparing said alloy or wax mould is also disclosed.

Description

(1) Technical field [0001] The invention relates to a precision casting method, in particular to a low-melting-point alloy special-shaped casting method. (2) Background technology [0002] Existing casting methods can be divided into two categories, one is ordinary sand casting methods, the other is special casting, pressure casting, investment casting, metal casting, ceramic casting, centrifugal casting, squeeze casting and other methods. Regardless of the two types of casting methods, the pattern must be made first, such as metal molds, wooden molds, ceramic molds, etc. Pattern making is the key to production, and the key technology of pattern making is to ensure that there is no back hook, Each angle cannot be greater than 90°, and each angle must be made into R 2 -R 5 The rounded corners and opening and closing patterns must be reasonable, otherwise it will directly affect the demoulding, or even fail to demould. Because the existing technology cannot solve the complex...

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
IPC IPC(8): B22C7/02B22C9/04B22C9/22
Inventor 齐志威
Owner 齐志威
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap