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Layer-by-layer fabrication method in laser melting (sls) of gravity die casting process

A technology of die casting and process, which is applied in the field of layer-by-layer manufacturing in laser melting (SLS) of gravity die casting process, can solve the problems of piston modeling consumption, etc., and achieve reduction of research and development time, improvement of quality, cost saving and the effect of time

Inactive Publication Date: 2020-03-24
KOLBENSCHMIDT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The production of the casting mold (die) for casting the piston is very expensive due to the shape of the piston

Method used

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  • Layer-by-layer fabrication method in laser melting (sls) of gravity die casting process
  • Layer-by-layer fabrication method in laser melting (sls) of gravity die casting process
  • Layer-by-layer fabrication method in laser melting (sls) of gravity die casting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0095] figure 1 Shown is a piston upper part 1 produced in a gravity die casting process in a casting mold produced by DMLS.

[0096] figure 2 Another piston upper 20 is shown made in a gravity die casting process in a casting mold made by DMLS.

[0097] image 3 Another piston upper 40 is shown made in a gravity die casting process in a casting mold made by DMLS.

[0098] Figure 4 A and B in FIG. 2 show two views of another embodiment of the piston upper part 60 . In region 61 , the contact region of the sintered bottom, not shown here, of the casting mold, likewise not shown, can be seen. By means of DMLS, a sintered bottom for use in a casting mold for producing a piston is produced. The sintered bottom is used when manufacturing the piston upper portion 60 by a gravity die casting process. In the manufacture of the sintered bottom, the micropores are passed through DMLS at a porosity of 0% or a density of 7.8g / cm 3 case structure. Embed 18,000 microwells with a ...

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Abstract

The present invention relates to the use of direct metal laser sintering (DMLS) for the manufacture of casting molds, in particular dies, to prevent gaseous inclusions in internal combustion engine pistons produced by the gravity die casting process, wherein at least one of the casting molds The region has a plurality of small openings, in particular micropores, for the conduction of air, and the invention relates to a method for producing casting molds, in particular dies, for gravity die casting for the production of internal combustion engine pistons craft.

Description

technical field [0001] The present invention relates to a method of manufacturing casting molds using direct metal laser sintering (DMLS). Background technique [0002] In die casting, the melt is poured ascending or descending in a permanent mold under the influence of gravity or under light pressure. [0003] DE 10 2014 211 350 A1 relates to a piston for an internal combustion engine made of metal or a metal alloy, wherein the piston or at least one piston part is produced in an investment-based casting method in a permanent mold-based casting method, and to a method. The gravity die casting method is disclosed here as a permanent mold based method for manufacturing pistons. [0004] In the gravity die casting process, the melt is poured into the casting mold, mold (die) through the casting system under the influence of gravity. The shrinkage porosity that occurs is compensated by so-called dosers and the solidification of the material is controlled by cooling the casti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/06B22D15/02B22F3/105B22F5/00
CPCB22C9/06B22C9/067B22D15/02B22F5/007B22F2003/248B22F10/00B22F10/66B22F10/64B22F10/28B29C64/153Y02P10/25B33Y80/00B22F3/105
Inventor U·布施坎普S·斯塔谢夫
Owner KOLBENSCHMIDT AG
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