Method for casting hollow mould

A hollow and solid casting technology, used in casting molding equipment, molds, cores, etc., can solve the problems of carbonization of low-carbon steel castings, carbon defects of iron castings, etc., to reduce the high temperature area of ​​liquid, reduce contact, The effect of reducing distance

Inactive Publication Date: 2006-03-22
蒋斌沅
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies of the existing full mold casting method, and propose a full mold casting method that can effectively solve the residual carbon produced by the pattern material during pyrolysis and bring carbon defects to the cast iron. The residual carbon produced during the pyrolysis of the pattern material brings carbon defects to iron castings, and can effectively solve the problem of carbon increase in low carbon steel castings

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
  • Method for casting hollow mould
  • Method for casting hollow mould
  • Method for casting hollow mould

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]A full mold casting method, the casting mold 1 is made of polystyrene foam, characterized in that: the casting mold 1 of the full mold casting is hollow, and some holes 2 are added in the body of the casting mold foam part. Due to the existence of these holes, the total amount of foam occupied in this part of the cavity is correspondingly reduced. The form of the hole 2 can take other forms such as fence shape, honeycomb shape to reduce the total amount of foam in the foam mold. Moreover, the material of the casting feeding port 3 is a hollow feeding port made of iron sheet, so that the space of the port can not only store an appropriate amount of gas from the inside of the mold, but also reduce the local pressure of the entire mold by changing the material. Foam occupancy to reduce the amount of foam inside the mold.

[0028] Reduce the total amount of polystyrene foam in the cavity by improving the structure of the foam casting mold, so as to make up for the defects o...

Embodiment 2

[0031] A method of full mold casting, the casting mold 4 is made of EPS material, characterized in that: the casting mold 4 of the full mold casting is hollow, and a structural inner space 7 is set in the body of the casting mold foam part, and Directly use the exhaust channel set in the mold for exhaust. When the foam casting mold is finished with the last layer of paint or unit type, a certain number of air outlet holes 6 are directly inserted above the mold exhaust holes 5, just like sand molds. Exhaust air is carried out like casting air holes. Because any casting has a filling time when pouring, this filling process also provides a certain time guarantee for the smoke in the cavity to be sucked out. The casting mold is modified to reduce the weight and exhaust, which also reduces the gas pressure inside the cavity due to the foam vaporization industry. The conditions are provided for the compound gas to leave the surface of molten steel. As long as the hydrocarbon gas k...

Embodiment 3

[0033] A full mold casting method, the casting mold 8 is a hollow body made of other foams, and a honeycomb inner hole 9 is set in the body of the casting mold foam part. Due to the existence of polystyrene foam inside the mold cavity, during the pouring process In the process, it is difficult to completely discharge these hydrocarbon gases out of the cavity. This may cause differences in carbon content in the lower, middle and upper parts of the casting body. In order to solve this problem, the cooling speed of the molten steel is fast, and the number and spacing of the gates in the casting are used to reduce the liquid high temperature area in the cavity, reduce the distance of the high temperature molten steel in the cavity, and shorten the existence time of the liquid high temperature, that is, The contact between high temperature molten steel and hydrocarbon gas is reduced. An ingate 12 is added between the two ingates 10 and 11 with a large spacing to form an inner gate...

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

No PUM Login to view more

Abstract

The casting method with hollow mold is an improved solid mold casting method, which has reduced carbon generation, improved carbon exhaust and reduced recarburization of casting by means of one or several measures of improving casting mold, exhausting gas to reduce pressure and setting reasonable casting system.

Description

technical field [0001] The present invention relates to a kind of solid mold casting method, belongs to gasification mold casting or called lost foam casting, especially refers to a kind of use combustible material (molding material) to make pattern, make protective coating (mold shell) by paint coating ), the method of casting production can also be applied in the investment casting method. Background technique [0002] Both investment casting and solid casting are special casting processes in the field of casting production. They use soluble, fusible, and combustible materials (mold materials) to make patterns, and make protective coatings (shells) by coating. For foundry production. Investment casting and solid casting adopt a one-time pattern, so it is not necessary to take the mold from the mold, the draft angle is canceled, and there is no parting surface; the use of coating technology improves the precision of the casting and improves the surface roughness; It adopt...

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 Applications(China)
IPC IPC(8): B22C9/00
Inventor 蒋斌沅
Owner 蒋斌沅
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