CN103909226A - Processing process for bearing seat - Google Patents

Abstract

The invention discloses a processing process for a bearing seat. The processing process comprises the following processing steps: coating a fireproof coating on a bearing seat smelting mould; covering fine sand; putting the bearing seat smelting mould into an ammonium chloride water solution to be hardened; immersing a mould shell into hot water; automatically smelting a wax mould and releasing from the mould shell to obtain a cavity with the shape which is the same as that of a casting; putting the mould shell into a heating furnace and heating; pouring a smelted metal liquid into the bearing seat mould shell, and injecting and molding; after condensing and cooling the casting, cleaning and checking the casting. The processing process is safe and environment-friendly and has high efficiency; the produced bearing seat has a smooth and clean surface and an accurate size, so that the aim of less cutting or no cutting can be realized.

Description

A kind of bearing block processing technology

technical field

The present invention relates to a kind of bearing block processing technology.

Background technology

Bearing is in mechanical transmission course, to work the parts of fixing and reducing load coefficient of friction.Also can say, in the time that other parts produce relative motion each other on axle, be used for reducing the fixing parts of coefficient of friction and retainer shaft center in power transmission process.Bearing is a kind of very important parts in contemporary plant equipment.Its major function is supported mechanical rotary body, the mechanical load coefficient of friction in order to reduction equipment in transmission process.

Bearing block be bearing is play a part stable, fixing.

Summary of the invention

The object of the invention is to provide a kind of bearing block processing technology, this processing technology safety, environmental protection, and efficiency is high; The bearing block produced is firm and use.

The solution of the present invention is as follows: a kind of bearing block processing technology, and procedure of processing is as follows:

1., on bearing block fusible pattern, be coated with fireproof coating, then cover the fine sand that 1-2mm is thick, then put it in the aqueous ammonium chloride solution of 1:10 proportioning and harden; Repeat to hang coating, stucco and hardening process 3 times, until form the shell that 5～10mm is thick;

2., above-mentioned shell is immersed in the hot water of 80～90 DEG C, wax-pattern is deviate from after melting voluntarily from shell, obtains the die cavity consistent with foundry goods shape;

3., above-mentioned shell is put into heating furnace, heating at 400～500 DEG C, to remove the impurity and the moisture content that produce in shell;

4., molten metal bath is poured in bearing block shell, injection moulding, implantation temperature is 500-600 DEG C;

5., casting solidification cooling after, and it is cleared up and is checked.

Further, described fireproof coating is made up of waterglass and the silica flour solution of 1:1 proportioning.

Processing technology safety of the present invention, environmental protection, efficiency is high, and bearing block any surface finish, the size produced are accurate, can reach few cutting or the object without cutting.

Detailed description of the invention

A kind of bearing block processing technology, procedure of processing is as follows:

1., on bearing block fusible pattern, be coated with fireproof coating, then cover the fine sand that 1-2mm is thick, then put it in the aqueous ammonium chloride solution of 1:10 proportioning and harden; Repeat to hang coating, stucco and hardening process 3 times, until form the shell that 5～10mm is thick;

2., above-mentioned shell is immersed in the hot water of 80～90 DEG C, wax-pattern is deviate from after melting voluntarily from shell, obtains the die cavity consistent with foundry goods shape;

3., above-mentioned shell is put into heating furnace, heating at 400～500 DEG C, to remove the impurity and the moisture content that produce in shell;

4., molten metal bath is poured in bearing block shell, injection moulding, implantation temperature is 500-600 DEG C;

5., casting solidification cooling after, and it is cleared up and is checked.

Described fireproof coating is made up of waterglass and the silica flour solution of 1:1 proportioning.

Although above the specific embodiment of the present invention has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned embodiment according to conception of the present invention and change and amendment; when its function producing does not exceed spiritual that description contains yet, all should be within protection scope of the present invention.

Claims (2)

1. a bearing block processing technology, is characterized in that, procedure of processing is as follows:

1., on bearing block fusible pattern, be coated with fireproof coating, then cover the fine sand that 1-2mm is thick, then put it in the aqueous ammonium chloride solution of 1:10 proportioning and harden; Repeat to hang coating, stucco and hardening process 3 times, until form the shell that 5～10mm is thick;

2., above-mentioned shell is immersed in the hot water of 80～90 DEG C, wax-pattern is deviate from after melting voluntarily from shell, obtains the die cavity consistent with foundry goods shape;

3., above-mentioned shell is put into heating furnace, heating at 400～500 DEG C, to remove the impurity and the moisture content that produce in shell;

4., molten metal bath is poured in bearing block shell, injection moulding, implantation temperature is 500-600 DEG C;

5., casting solidification cooling after, and it is cleared up and is checked.

2. a kind of bearing block processing technology according to claim 1, the fireproof coating described in it is characterized in that is made up of waterglass and the silica flour solution of 1:1 proportioning.