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Method for producing copper-infiltrated valve seat ring

A valve seat ring, copper infiltration technology, applied in the direction of lift valve, valve device, machine/engine, etc., can solve problems such as inaccuracy, and achieve the effect of optimizing immersion, saving time, and good separation

Inactive Publication Date: 2020-05-26
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the determination of the required amount of copper in the case of winding copper coils is often imprecise and wire winding machines have to be provided

Method used

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  • Method for producing copper-infiltrated valve seat ring
  • Method for producing copper-infiltrated valve seat ring
  • Method for producing copper-infiltrated valve seat ring

Examples

Experimental program
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Embodiment Construction

[0034] The following will be based on Figure 1 to Figure 3 The method according to the invention is described in an exemplary manner:

[0035]To carry out the method, the copper powder 100b and the functional material powder mixture 100a are introduced into the same connection chamber 104 . The copper powder 100b may thus be introduced before the functional material powder mixture 100a, or the functional material powder mixture 100a may be introduced before the copper powder 100b. Copper powder 100b and functional material powder mixture 100a may also be introduced simultaneously. The copper powder 100b and the functional material powder mixture 100a can thus be introduced into the cavity 104 in such a way that the copper powder 100b and the functional material powder mixture 100b do not substantially mix with each other during the introduction.

[0036] The functional material powder mixture may thus comprise metal powders based on iron, copper or cobalt, hard phases, carb...

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Abstract

The invention relates to a method for producing a copper-infiltrated valve seat ring (1). The method includes introducing a copper powder (100b) and a functional material powder mixture (100a) into aconnection chamber (104), the connection chamber (104) being in a moulding element (101) of a moulding device (100). The introduced copper powder (100b) and the introduced functional material powder mixture (100a) are then formed simultaneously in the connection chamber (104) by means of the moulding element (101), in particular by extrusion, into a combined blank (1c) comprising a functional segment (1a) and a copper segment (1b). The shaped blank (1c) is subsequently sintered in such a way that the valve seat ring (1) is formed in such a way that the copper segment (1b) liquefies and penetrates pores present in the functional segment (1a) during the sintering.

Description

technical field [0001] The invention relates to a method for producing a copper-infiltrated valve seat ring and to a valve seat ring produced by carrying out the method. The invention further relates to a tribological system comprising such a valve seat ring, and to an internal combustion engine comprising such a valve seat ring, and alternatively or additionally comprising such a tribological system. Background technique [0002] It is known to produce valve seat rings for inlet and outlet valves by powder metallurgy such that functional segments of functional material are infiltrated with copper during the sintering process. While the functional segments are wear resistant, the copper primarily contributes to the thermal conductivity of the seat ring. [0003] Such seat rings are usually produced in that the ring-shaped functional blank and the ring-shaped copper blank are each extruded in a press. The two bodies are then arranged relative to each other such that the cop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/10B22F3/20B22F3/03B22F3/10F01L3/02
CPCB22F5/10B22F3/20B22F3/03B22F3/1035F01L3/02B22F1/09F01L2820/01F01L2303/01B22F3/02C22C33/0278B22F7/064B22F2998/10B22F5/008B22F2999/00C22C1/0425B22F2007/066B22F2207/13B22F3/001
Inventor H·格林伯格H·赫肯顿P·萨特尔K·温特里奇
Owner MAHLE INT GMBH
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