CN88202405U

CN88202405U - Vacuum casting device

Info

Publication number: CN88202405U
Application number: CN 88202405
Authority: CN
Inventors: 任伟
Original assignee: Central Iron and Steel Research Institute
Current assignee: Central Iron and Steel Research Institute
Priority date: 1988-04-04
Filing date: 1988-04-04
Publication date: 1988-10-19

Abstract

The utility model belongs to metallic casting processes, and the utility model is mainly suitable for producing castings such as various types of steel, various metals, alloyed threads, bar materials, etc. The utility model is mainly characterized in that the method of flowing down vacuum casting principle is adopted, molten steel or metal melt sucks depending on vacuum, and the mould cavity can be filled with the dead weight and the atmospheric pressure on the liquid level quickly. Wires or rods with smooth surfaces can be obtained. Scores of thin and long metallic filaments or rods can be cast by one mould once. The diameters of the wires or the rods can be smaller than 3 millimeters and the length can reach to 500 millimeters to 800 millimeters.

Description

Vacuum casting device

The utility model belongs to metal casting device.Mainly be applicable to silk material, bar and other foundry goods etc. of producing all kinds of steel grades, various metal and alloy thereof.

Usually, the silk, rod etc. of producing metal material all adopt rolling, drawing or technology such as forge.Its shortcoming is that the production cycle is long, complex process, and yield of alloy is low, and equipment investment is big.In addition, also have and adopt casting technique to produce the silk rod.Wherein comparatively advanced is vacuum suction casting technique, from bottom to top inhales casting.There are the following problems for this method: the first, on annotate length and be restricted, generally can not be greater than 400 millimeters; The second, the diameter of the silk of annotating, rod can not be too little, generally must not be less than 3 millimeters of φ; The 3rd, yield rate is low; The 4th, can only inhale one of casting at every turn, productivity ratio is low.

The purpose of this utility model is to provide a kind of thin and long wire, rod can produced, and the productivity ratio height, simply make a bet method deadweight suction pouring device of equipment.

Its main technical schemes is to adopt the method for making a bet, and the die cavity of mold is evacuated.Like this, molten steel (or metal bath) not only can be full of the die cavity of general silk, rod rapidly, and can be full of thin and long die cavity under negative pressure of vacuum, dead weight and liquid level atmospheric pressure three's effect, thereby can directly obtain various thick, thin, and long wire, excellent product.

On device, principal character is formed the mold assembly by mold and its cover steel pipe or elongated vessel outside.Mold can freely be put into or take out in steel pipe or elongated vessel.The dead sealing of steel pipe bottom weldering, and steel pipe is longer than mold, promptly at the bottom of the mold Yu at the bottom of the steel pipe one section space arranged still, is convenient to vacuumize; In addition, be provided with a plurality of microscler die cavities in the mold, the diameter of each die cavity and length are exactly wire, the desired diameter of excellent product and length.

The advantage of this device is: can directly produce all size (comprise thin, long) ganoid silk material or bar by molten steel (or metal bath), and a mold just can water once and outpours tens, the production efficiency height.

Description of drawings and embodiment

Fig. 1 is a schematic diagram of the present utility model.

Fig. 2 is the schematic diagram of mold assembly.

Fig. 1,1 is smelting furnace, and 2 is the mold assembly, and 3 is valve, and 4 is vacuum storage compartment, and 5 is Pressure gauge, and 6 is valve, and 7 is mechanical pump.

When the steel of smelting furnace or metal are about to melting when intact, valve-off 3 is opened valve 6, mechanical pump 7 is opened in energising, and extracting vacuum is when the vacuum of vacuum apotheca 4 acquires a certain degree, and when melting finishes, open valve 3, mechanical pump 7 works on, at this moment, reach certain vacuum in the mold assembly 2, begin to pour into a mould, molten steel or metal bath are sucked in vacuum, under melt deadweight and the atmospheric effect of melt liquid level, be full of die cavity rapidly.Deng having solidified, extract mold out, open die cavity, just obtain desired wire, rod.

Fig. 2 is a mold assembly schematic diagram.8 is steel pipe or elongated vessel among the figure, and 9 is mold, and it is made by refractory material or heat resisting steel, and 10 is die cavity, and 11 is mold cap mouth, and 12 for to lead to the passway of valve 3 and vacuum storage compartment 4, and 13 is sealing ring.Mold 9 can freely be put into or take out in steel pipe or elongated vessel 8.Steel pipe or elongated vessel lower end are sealed.Each mold has 20～50 die cavities.The die cavity diameter can be less than 3 millimeters, and length can reach 500～800 millimeters.

Claims

1, a kind of employing casting technique directly pours into the device of wire, rod by molten steel or metal bath, it is characterized in that it is made up of mold assembly 2, vacuum storage compartment 4, valve 3 and 6, Pressure gauge 5 and mechanical pump 7;

2, device according to claim 1 is characterized in that the mold assembly is made up of mold 9, steel pipe or elongated vessel 8, sealing ring 13.

3, device according to claim 2 is characterized in that each mold has 20～50 die cavities.

4,, it is characterized in that mold 9 can freely put into or take out in steel pipe or elongated vessel 8 according to right 2 described devices.