US2016311015A1PendingUtilityA1

Die-casting system with enhanced adherence shot sleeve pour liner

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Assignee: UNITED TECHNOLOGIES CORPPriority: Apr 24, 2015Filed: Apr 24, 2015Published: Oct 27, 2016
Est. expiryApr 24, 2035(~8.7 yrs left)· nominal 20-yr term from priority
Inventors:Lim Yuan KwangChee Yao HuiZheng Chuan ChenCharlene Kwan Yee LingMario P. BochiechioAwadh B. PandeyDilip M. Shah
C23C 24/087B22D 17/2023C23C 24/106B23K 26/34
43
PatentIndex Score
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Claims

Abstract

A pour liner for a shot sleeve of a die-casting system including a bonding layer within a slot in a shot sleeve substrate and a refractory metal layer adjacent to the bonding layer. A method of manufacturing a shot sleeve including forming a slot in the slot sleeve, laser cladding a bonding layer within the slot, and laser cladding a refractory metal layer onto the bonding layer.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A pour liner for a shot sleeve of a die-casting system, comprising:
 a bonding layer within a slot in a shot sleeve substrate; and   a refractory metal layer adjacent to the bonding layer.   
     
     
         2 . The pour liner as recited in  claim 1 , wherein the pour liner is circular in cross section. 
     
     
         3 . The pour liner as recited in  claim 1 , wherein the pour liner is semi-circular in cross-section. 
     
     
         4 . The pour liner as recited in  claim 1 , wherein the bonding layer and the refractory metal layer are applied via a laser cladding process. 
     
     
         5 . The pour liner as recited in  claim 4 , wherein the bonding layer and the refractory metal layer are applied layer-by-layer. 
     
     
         6 . The pour liner as recited in  claim 1 , wherein the bonding layer includes a nickel alloy. 
     
     
         7 . The pour liner as recited in  claim 1 , wherein the bonding layer is Inconel. 
     
     
         8 . The pour liner as recited in  claim 1 , wherein the refractory metal layer includes a tantalum alloy. 
     
     
         9 . The pour liner as recited in  claim 1 , wherein the refractory metal layer includes a tungsten alloy. 
     
     
         10 . A die-casting system, comprising:
 a shot sleeve having a pour liner adjacent a pour hole, the pour liner including a bonding layer.   
     
     
         11 . The system as recited in  claim 10 , wherein the bonding layer is adjacent to a shot sleeve substrate and a refractory metal layer is adjacent to the bonding layer. 
     
     
         12 . The system as recited in  claim 10 , wherein the pour liner is circular in cross-section. 
     
     
         13 . The system as recited in  claim 10 , wherein the pour liner is semi-circular in cross-section. 
     
     
         14 . The system as recited in  claim 10 , wherein the pour liner is flush with a cut in the shot sleeve. 
     
     
         15 . A method of manufacturing a shot sleeve, comprising:
 forming a slot in the slot sleeve;   laser cladding a bonding layer within the slot; and   laser cladding a refractory metal layer onto the bonding layer.   
     
     
         16 . The method as recited in  claim 15 , wherein the bonding layer includes Inconel. 
     
     
         17 . The method as recited in  claim 15 , wherein the refractory metal layer includes a tantalum alloy. 
     
     
         18 . The method as recited in  claim 15 , wherein the refractory metal layer includes a tungsten alloy. 
     
     
         19 . The method as recited in  claim 15 , wherein forming the slot includes forming the slot adjacent to a pour hole. 
     
     
         20 . The method as recited in  claim 15 , further comprising subjecting the boding layer to a post weld heat treatment prior to laser cladding the laser cladding the refractory metal layer onto the bonding layer.

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