Hot sprue system for diecasting

A technology of die casting and direct sprue, which is applied to casting equipment, casting molding equipment, and equipment for feeding molten metal into molds, etc., and can solve problems such as exceeding financial capabilities and lengthy time processes
CN1373695AInactive Publication Date: 2002-10-09HOTFLO DIECASTING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HOTFLO DIECASTING
Publication Date
2002-10-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a mold insert and a process method for high-pressure hot-chamber metal mold casting, which basically eliminates the sprue casting body and greatly improves the flow conditions of molten metal. The mold insert includes: (1) a heated sprue body insert (130, 258) positioned within a stationary block (112) in the mold assembly and including a sprue channel (136, 260); (2) a sprue channel (136, 260); Cooled sprue head inserts (132, 266) are installed in the moving module (114) of the mold assembly. The sprue channel body inserts and head inserts are mounted coaxially so that their inner ends fit well with each other in the area of ​​the parting surface (155) of the mold and at least form a curved transition channel ( 138,262,264) which connects the sprue channel (136,260) with at least one sprue channel (140,254,256) formed along the parting surface. The temperature of the sprue body inserts and head inserts is controlled, so that the solidification point of the molten metal can occur just in the transition channel, and after each injection, the sprue channel can be ensured. Residual molten metal is returned to the nozzle of the casting machine, so that the sprue body is never formed again.
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Description

technical field

[0001] This invention relates to methods and apparatus for high pressure metal mold casting, and more particularly to sprue systems for use in hot chamber high pressure metal mold casting processes. Background technique

[0002] At present, a large number of hot chamber, high pressure, metal mold casting machines have been installed in foundry production for the production of small die castings made of zinc, lead, tin, magnesium, aluminum and their alloy materials. figure 1 A typical such machine tool 10 is shown. A pool of molten metal 12 is contained in a heated crucible 14 . Inside a cylinder 18 submerged in the molten metal is a plunger 16 which injects the molten metal through a gooseneck 20 and a connecting nozzle 22 heated by an external flame into a fixed block 26 and a mobile block. 28 in the cavity 24 between. The fixed module 26 is mounted on a fixed template 30 and the mobile module 28 is mounted on a movable template 32...

Claims

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