CN104741539A - Manufacturing process of high-strength sand mold with novel chiller added - Google Patents

Abstract

The invention discloses a manufacturing process of a high-strength sand mold with a novel chiller added. According to a casting process appearance drawing, a core box drawing and a casting mold assembly drawing, a disc appearance and a disc hole appearance are respectively produced firstly, then, a disc core and a disc hole core are produced and assembled, and core sand is dried to obtain a casting mold; and then, a casting is obtained through casting. The method overcomes the problems of more procedures and high workload in a machining process in the prior art, improves the production efficiency, prevents the quality defect caused by unqualified machining size, is high in utilization rate of raw materials, reduces the production cost, and preferably solves all troubles in the use of traditional chillers.

Description

Be added with the manufacture craft of the high-strength sand of novel chill

 

Technical field

The invention belongs to casting technology field, be specifically related to a kind of manufacture craft being added with the high-strength sand of novel chill.

 

Background technology

The casting of high-strength sand foundry goods at least comprises making chill, moulding, makes the steps such as core.In current sand mold pouring technology, the sand-cast finished product hardness made is inadequate, and need carry out further machining, not only casting process is more, affects production capacity, and the precision of foundry goods cannot effectively be ensured simultaneously, and percent defective is higher.

 

Summary of the invention

In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of manufacture craft being added with the high-strength sand of novel chill, can directly cast out high-strength sand foundry goods, casting accuracy is high, and processing technology thereof is simple.

The manufacture craft being added with the high-strength sand of novel chill provided by the invention, comprises the following steps:

(1) Foundry sand is chosen, add the shot being equivalent to roughing sand gross weight 30%-100%, the particle diameter of shot is 0.5-1.3mm, adds the waterglass of roughing sand and shot gross weight 2.5-7% afterwards as adhesive, put into afterwards puddle mixer mix after compound for subsequent use;

(2) choose Foundry sand, add be equivalent to roughing sand gross weight 6%-8% waterglass as adhesive, put into afterwards puddle mixer mix after compound is for subsequent use;

(3) get (2) gained compound to carry out moulding, make core, in moulding, make in the process of core, need the position of placing chill to place the compound of step one gained as chill at sand mold, fuse, for subsequent use after obtaining sand mold, fuse;

(4) on (3) gained sand mold, fuse, bundle establishes gas hole, and described gas hole is the blind hole extending to sand mold inside from sand mold outer surface, for subsequent use afterwards;

(5) (4) gained sand mold, fuse is got, pass into carbon dioxide in the air-vent that Xiang Zhashe is good and carry out drying process, passing into carbon dioxide gas temperature is 5-40 DEG C, and duration of ventilation is 5-30s, after all passages all complete ventilation sclerosis, namely complete this technique.

The manufacture craft being added with the high-strength sand of novel chill provided by the invention, its beneficial effect is, overcomes operation in prior art process more, the problem that workload is large, improves production efficiency; Avoid the defective mass defect caused of raw material allotment, utilization rate of raw materials is high, reduces production cost; The finished product cast size cast out is accurate, without the need to machining, effectively ensure that casting quality.

 

Detailed description of the invention

Below in conjunction with an embodiment, the manufacture craft being added with the high-strength sand of novel chill provided by the invention is described in detail.

Embodiment

The manufacture craft being added with the high-strength sand of novel chill of the present embodiment, comprises the following steps:

(1) choose Foundry sand, add and be equivalent to the shot of roughing sand gross weight 60%, the particle diameter of shot is 0.8mm, adds the waterglass of roughing sand and shot gross weight 5% afterwards as adhesive, put into afterwards puddle mixer mix after must compound for subsequent use;

(2) choose Foundry sand, add be equivalent to roughing sand gross weight 7% waterglass as adhesive, put into afterwards puddle mixer mix after compound is for subsequent use;

(3) get (2) gained compound to carry out moulding, make core, in moulding, make in the process of core, need the position of placing chill to place the compound of step one gained as chill at sand mold, fuse, for subsequent use after obtaining sand mold, fuse;

(4) on (3) gained sand mold, fuse, bundle establishes gas hole, and described gas hole is the blind hole extending to sand mold inside from sand mold outer surface, for subsequent use afterwards;

(5) (4) gained sand mold, fuse is got, pass into carbon dioxide in the air-vent that Xiang Zhashe is good and carry out drying process, passing into carbon dioxide gas temperature is 35 DEG C, and duration of ventilation is 20s, after all passages all complete ventilation sclerosis, namely complete this technique.

Be added with the manufacture craft of the high-strength sand of novel chill, can directly cast out high-strength sand foundry goods, without the need to machining, operation is simple, and the high-strength sand casting dimension of the finished product cast out is accurate, effectively ensure that casting quality.

Claims (1)

1. be added with a manufacture craft for the high-strength sand of novel chill, it is characterized in that: said method comprising the steps of:

(1) Foundry sand is chosen, add the shot being equivalent to roughing sand gross weight 30%-100%, the particle diameter of shot is 0.5-1.3mm, adds the waterglass of roughing sand and shot gross weight 2.5-7% afterwards as adhesive, put into afterwards puddle mixer mix after compound for subsequent use;

(2) choose Foundry sand, add be equivalent to roughing sand gross weight 6%-8% waterglass as adhesive, put into afterwards puddle mixer mix after compound is for subsequent use;

(3) get (2) gained compound to carry out moulding, make core, in moulding, make in the process of core, need the position of placing chill to place the compound of step one gained as chill at sand mold, fuse, for subsequent use after obtaining sand mold, fuse;

(4) on (3) gained sand mold, fuse, bundle establishes gas hole, and described gas hole is the blind hole extending to sand mold inside from sand mold outer surface, for subsequent use afterwards;

(5) (4) gained sand mold, fuse is got, pass into carbon dioxide in the air-vent that Xiang Zhashe is good and carry out drying process, passing into carbon dioxide gas temperature is 5-40 DEG C, and duration of ventilation is 5-30s, after all passages all complete ventilation sclerosis, namely complete this technique.