Layer-by-layer production method during laser melting (sls) in gravity die casting operations

A hard mold casting and hard mold technology, applied in the field of laser sintered casting molds, can solve problems such as piston modeling consumption, and achieve the effects of reducing research and development time, saving cost and time, and improving quality

Inactive Publication Date: 2017-03-08
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 production method during laser melting (sls) in gravity die casting operations
  • Layer-by-layer production method during laser melting (sls) in gravity die casting operations
  • Layer-by-layer production method during laser melting (sls) in gravity die casting operations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0096] figure 1 Shown is a piston upper part 1 produced in a gravity die casting process in a casting mold produced by DMLS.

[0097] figure 2 Another piston upper 20 is shown made in a gravity die casting process in a casting mold made by DMLS.

[0098] image 3 Another piston upper 40 is shown made in a gravity die casting process in a casting mold made by DMLS.

[0099] Figure 4 A and 4B 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. When manufacturing the sintered bottom, the micropores were structured by DMLS with a porosity of 0% or a density of 7.8 g / cm3. Embed 18,000 microwells with a diameter D of 0.2 mm. As ...

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Abstract

The invention relates to the use of direct metal laser sintering (DMLS) for the production of a casting mold, in particular a permanent mold, in order to avoid air pockets in internal combustion engine pistons manufactured in a gravity die casting process, wherein at least one portion of the casting mold has a plurality of small openings, in particular microscopic holes, for discharging air. The invention also relates to a method for producing a casting mold, in particular a permanent mold, for gravity die casting pistons for internal combustion engines.

Description

technical field [0001] The invention relates to a laser sintered casting mold for the gravity die casting process, in particular for the production of internal combustion engine pistons, according to the features stated in the corresponding preambles of the independent claims. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(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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