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A lost foam pouring system for a gearbox case

A gating system and gearbox technology, which is applied to casting molding equipment, molds, cores, etc., can solve problems such as shrinkage, loosening, and shrinkage, and achieve the effects of reducing heat loss, shortening filling time, and improving casting quality.

Active Publication Date: 2015-08-19
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The castings produced by the existing technology often have problems such as shrinkage and shrinkage

Method used

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  • A lost foam pouring system for a gearbox case
  • A lost foam pouring system for a gearbox case
  • A lost foam pouring system for a gearbox case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Example: Combine Figure 1-3 , the lost foam casting system of the gearbox case of the present invention, the sprue 2 is connected with the sprue cup 1, the first runner 3 and the second runner 4 successively from top to bottom on the sprue 2, and the first runner 3 and the second sprue 4 are respectively connected to the sprue 2 along the radial direction of the sprue; and, the ends of the first runner and the second runner away from the sprue are respectively provided with first Ingate sprue 31 , second ingate sprue 41 .

[0018] In the specific setting, the first runner 3 is generally semicircular, the sprue is in the middle of the semicircular first runner, and the two first inner runner gates 31 at the end of the first runner are in the Both sides of the upper half of the gearbox casing 5.

[0019] The second runners are two with different lengths and form a V shape, and the two second runner gates 41 at the ends of the second runners are located at the thick and...

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Abstract

The invention discloses an evanescent mode pouring system of a speed changing box body. The evanescent mode pouring system is provided with a sprue, wherein the sprue is sequentially communicated with a pouring cup, a first cross gate and a second cross gate from top to bottom, and the first cross gate and the second cross gate are respectively communicated onto the sprue along the radial direction of the sprue; the end part, away from of the sprue, of each of the first cross gate and the second cross gate is respectively provided with a first inner gate pouring port and a second inner gate pouring port. The pouring system is adopted for pouring a casting, so that the mold filling time is shortened, and the heat loss is reduced; moreover, the shrinkage porosity and cavity weakness can be greatly reduced, and the casting quality can be effectively improved.

Description

Technical field: [0001] The invention relates to a lost foam casting system, in particular to a lost foam casting system for a gearbox case. Background technique: [0002] Lost foam casting is to bond and combine paraffin or foam models similar in size and shape to castings to form model clusters. After brushing refractory paint and drying, they are buried in dry quartz sand for vibration modeling, and poured under negative pressure to vaporize the model. , a new casting method in which liquid metal occupies the position of the model, solidifies and cools to form a casting. The lost foam casting process includes pouring riser system design, pouring temperature control, pouring operation control, negative pressure control, etc. The gating system plays a very important role in the lost foam casting process and is a key to the success of casting production. Therefore, a reasonable gating system design plays a vital role in ensuring the quality of lost foam castings. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04B22C9/08B22C9/24
Inventor 苏勇汪琴解明国吴来发刘伟李金磊马腾迪
Owner HEFEI UNIV OF TECH
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