CN201644711U

CN201644711U - Casting gate for preventing molten slags from entering sand mold

Info

Publication number: CN201644711U
Application number: CN2010201342982U
Authority: CN
Inventors: 杨邦树
Original assignee: SUZHOU KAIMAO CASTING INDUSTRY Co Ltd
Current assignee: SUZHOU KAIMAO CASTING INDUSTRY Co Ltd
Priority date: 2010-03-18
Filing date: 2010-03-18
Publication date: 2010-11-24
Anticipated expiration: 2020-03-18

Abstract

The utility model discloses a casting gate for preventing molten slags from entering a sand mold, which comprises a pouring cup and a down gate. The sprue cup is positioned above the down gate. The casting gate is characterized by also comprising a side gate which is positioned below the down gate and is communicated and connected with the down gate, wherein the bottom of one lateral surface of the side gate is provided with an ingate extending outwards; the ingate is of a step shape; an outlet of the ingate is higher than an inlet thereof; and the inner walls of all the gates are made of a high temperature ceramic material. The utility model solves the problems that in the prior art, the molten slags are easy to enter the sand mold, circulation of the gate is not smooth enough and the gate is easy to damage, and provides the casting gate, which can prevent the molten slags from entering the sand mold, keeps the circulation of the gate smooth and has better high temperature resistance effect.

Description

Prevent that slag from entering the foundry goods cast gate of sand mold

Technical field

The utility model relates to a kind of foundry goods cast gate, particularly relates to a kind of slag that prevents and enters the foundry goods cast gate of sand mold.

Background technology

In machinery manufacturing industry, have 80% to be foundry goods or to be processed by foundry goods, each foundry goods all must water cooling forming in the sand mold to the liquid of fusing by casting gate, cast gate is the narrow and small port between runner and the die cavity, also be the shortest and the smallest part, its effect makes melt liquid produce acceleration when advancing die cavity, helps being full of rapidly die cavity, gate portions elder generation condensation after the moulding, with near closed hollow ring, prevent that melt liquid from flowing backwards, it is too fast to avoid cavity pressure to descend.Therefore, whether the structure of casting gate rationally will directly influence the quality of foundry goods.At present, when foundry goods is watered in manufacturing, how directly melt liquid to be joined in the die cavity by casting gate, this class casting gate structure all has tangible deficiency, because at the casting initial stage. the horizontal plane of liquid in sand mold is lower, there is the part slag to enter in the sand mold, influences the quality of foundry goods, caused higher percent defective with liquid.The cast gate of prior art can not bear high temperature simultaneously, if can cause the infringement of breaking of cast gate during by high-temperature fusion liquid, because the cross section of cast gate is less, the input fused solution is known from experience the problem that has liquid premature set and deposition in cast gate, caused the cast gate inner flow passage unobstructed inadequately, the problem of foundry goods efficient is watered in influence.

The utility model content

In order to solve problem in the prior art, the utility model provides a kind of slag that prevents to enter sand mold, keeps the cast gate circulation smooth and easy and have a foundry goods cast gate of better high-temperature resistant result.

The technical scheme that the utility model adopted is:

A kind of slag that prevents enters the foundry goods cast gate of sand mold, comprise cup and down gate, described cup is positioned at the top of down gate, it is characterized in that: also comprise being positioned at the down gate below and connecting the runner gate that is connected with down gate, be provided with an overhanging ingate in the bottom of runner gate one side, ingate is stepped, and the outlet of ingate is higher than import, and the inwall of described each cast gate is made by high temperature ceramic material.

Aforesaid a kind of slag that prevents enters the foundry goods cast gate of sand mold, it is characterized in that: be provided with the oblique ascension section between the import of ingate and outlet, be provided with screen pack in slope expending section.

Aforesaid a kind of slag that prevents enters the foundry goods cast gate of sand mold, and it is characterized in that: the inwall of described each cast gate is made by high temperature resistant conducting ceramic material.

The beneficial effects of the utility model are:

1, adopt foundry goods cast gate of the present utility model, when casting, because the proportion of slag is less than liquid, so slag all floats on the liquid surface, the casting beginning, slag advances the import of people's runner gate and ingate by cup and down gate with liquid, because the outlet of ingate is higher than import, so liquid can not flow into from the outlet of ingate in the casting sand mold, along with the continuation of casting, the liquid in the runner gate increases, and the slag that temporarily enters ingate can be back in the runner gate with the rising of liquid, treat liquid when the runner gate inner height is higher than the outlet of ingate, pure liquid flows in the casting sand mold from the outlet of ingate.Simultaneously in the slope expending section of ingate, be provided with screen pack and can better slag be filtered out like this, guaranteed the quality of foundry goods.

2, the utility model adopts the inwall of each cast gate to adopt high temperature resistant conducting ceramic material to make, the destruction that the liquid that promptly can prevent to pour into causes because temperature is too high to pouring gate structure, simultaneously can be to the conducting ceramic material conductive heater, avoid liquid in cast gate, to produce and undesirablely condense and deposit, guaranteed the unobstructed of cast gate inner flow passage.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the generalized section of Fig. 2 along the A-A line.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As Fig. 1,2, shown in 3, a kind of slag that prevents enters the foundry goods cast gate of sand mold, comprise cup 1 and down gate 2, described cup 1 is positioned at the top of down gate 2, it is characterized in that: also comprise below that is positioned at down gate 2 and the runner gate 3 that is connected with down gate 2 perforations, be provided with an overhanging ingate in the bottom of runner gate 3 one sides, ingate is stepped, ingate comprises import 4, slope expending section 5, outlet 6, be provided with oblique ascension section 5 in the import 4 of ingate with between exporting 6, be provided with screen pack 7 in slope expending section 5, be used for filtering slag, the outlet 6 of ingate is higher than import 4, the inwall of described each cast gate is made by high temperature resistant conducting ceramic material, promptly can prevent the destruction of pyrosol to pouring gate structure, simultaneously again can be to conducting ceramic material energising heating, preventing that liquid from producing in cast gate undesirablely condenses and deposits

Show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. one kind prevents that slag from entering the foundry goods cast gate of sand mold, comprise cup and down gate, described cup is positioned at the top of down gate, it is characterized in that: also comprise being positioned at the down gate below and connecting the runner gate that is connected with down gate, be provided with an overhanging ingate in the bottom of runner gate one side, ingate is stepped, and the outlet of ingate is higher than import, and the inwall of described each cast gate is made by high temperature ceramic material.

2. a kind of slag that prevents according to claim 1 enters the foundry goods cast gate of sand mold, it is characterized in that: be provided with the oblique ascension section between the import of ingate and outlet, be provided with screen pack in slope expending section.

3. a kind of slag that prevents according to claim 2 enters the foundry goods cast gate of sand mold, and it is characterized in that: the inwall of described each cast gate is made by high temperature resistant conducting ceramic material.