A method for preparing foundry sand with good collapsibility

A casting mold and collapsibility technology, which is applied in the direction of casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of low recycling efficiency, high cost, poor collapsibility of molding sand molds, etc., to reduce residual strength and improve collapse performance , Improve the effect of collapsibility
CN110666096BInactive Publication Date: 2020-10-30含山县能华铸造有限公司
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
含山县能华铸造有限公司
Publication Date
2020-10-30
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a method for preparing casting molding sand with good collapsibility, and relates to the technical field of casting. The method comprises the following steps that a collapse modifier is prepared, the collapse modifier is composed of organic grease, carbide micro powder and inorganic potassium compound; and roughing sand, water glass, water, clay and the collapse modifier are mixed to form the casting molding sand with good collapsibility. According to the method, the normal-temperature strength and the residual strength of the molding sand can be effectively improved, pores and cracks can be generated in a bonding film in the molding sand after high-temperature by adding the collapse modifier prepared in the method, so that the continuity of the bonding film generated in the molding sand can be effectively destroyed, and then the residual strength is reduced, so that the collapsibility is remarkably improved, and better recycling is facilitated.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of casting, and in particular relates to a method for preparing casting sand with good collapsibility. Background technique

[0002] Sand casting is currently the most common and simplest type of casting in the state of the art and has been used for centuries. Sand casting is used to manufacture large parts such as gray cast iron, ductile iron, stainless steel and other types Sand casting of steel and other processes, the main steps include painting, mould, core making, modeling, melting and pouring, cleaning, etc. According to statistics, in my country or in the world, 60-70% of all castings are produced with sand molds. Compared with other casting methods, sand casting has low cost, simple production process and short production cycle.

[0003] For sand casting, it is necessary to apply a binder to bond the sand to make it into a casting mold before it can be cast. Water glass is a commonly used binder fo...

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