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Method and mold for surface densification and alignment of sintered components

A technology of densification and mould, applied in the direction of forming tools, manufacturing tools, material forming presses, etc., can solve the problems of limited use, unfavorable mechanical properties, etc., and achieve the effect of improving the precision of components

Active Publication Date: 2019-03-08
MIBA SINTER AUSTRIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the greater or lesser degree of porosity of the sintered component due to the manufacturing method has a negative effect on the mechanical properties of the sintered component, thereby limiting the use of components produced by powder metallurgy

Method used

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  • Method and mold for surface densification and alignment of sintered components
  • Method and mold for surface densification and alignment of sintered components
  • Method and mold for surface densification and alignment of sintered components

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Embodiment Construction

[0023] First of all, it should be confirmed that in the differently described embodiments, the same parts have the same reference signs or the same component designations, wherein the disclosure content contained in the entire description can be transferred to the same figure with the same figure Mark or on the same part of the same component name. Furthermore, selected positional descriptions in the description, such as top, bottom, side, etc., refer to the currently described or illustrated drawing and can be transferred to a new position in the event of a change of position.

[0024] It should be noted here that the calibration of the sintered component means that the sintered component is processed in a mold by a compression load in order to achieve at least approximately the theoretical dimensions of the component. "At least approximately" here means that deviations from the theoretical dimensions within customary tolerances are permissible.

[0025] The term "theoretica...

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Abstract

The invention relates to a method for surface densification and alignment of a sintered component (2), according to which the sintered component (2) is passed along an axis (3) through a plurality of mold segments of a mold (1) (7-11), the inner diameter (17) of the die segments becomes smaller in the extrusion direction, and each die segment (7-11) is arranged such that the plurality of die segments (7-11) The middle and rear mold segments (8-11) are each directly connected to the corresponding front mold segments (7-10) in the extrusion direction, so that in the last mold section with a reduced inner diameter (17) After surface densification in section (11), relaxation of the sintered part (2) takes place in an unloading section (21) directly connected to said last mold section (11), with inner diameter (17 ) has a larger inner diameter (22) than the last mold section (11) formed directly in front of the relief section in each of the mold sections (7-11) that has become smaller. The sintered component ( 2 ) is calibrated in the relief section ( 21 ), for which purpose the inner contour of the relief section ( 21 ) corresponds to the theoretical contour of the sintered component ( 2 ) with theoretical dimensions.

Description

technical field [0001] The invention relates to a method for surface densification and alignment of a sintered component, according to which the sintered component is moved along an axis from a first mold opening of a mold towards a mold opening opposite the first mold opening along said axis The second mold opening is moved, wherein the sintered component passes through several mold segments of the mold during said movement, and the surface area of ​​the sintered component is now densified, for which reason the inner diameters of successive mold segments along the The extrusion direction becomes smaller, and the individual mold sections are arranged such that the latter mold section of the plurality of mold sections is directly connected to the corresponding preceding mold section in the extrusion direction, and so that in the case of After the surface densification in the last mold section of reduced inner diameter, the relaxation of the sintered part takes place in a relief...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/03B22F3/16B22F3/24
CPCB21D37/08B22F3/03B22F3/16B22F3/24B30B9/28B30B11/025B30B15/028B22F3/1017B22F3/164B22F2003/166
Inventor H·勒斯勒尔H·施密德M·施泰因毛雷尔K·迪金格尔
Owner MIBA SINTER AUSTRIA
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