Information handling system magnesium housing manufacture with a hot runner die cast

Abstract

A portable information handling system housing portion is manufactured by a process that injects a magnesium aluminum alloy (Mg—Al) from a hot runner having plural outtakes into a mold having a spree at each of the plural outlets. In one example embodiment a housing lid portion is injection molded at a midpoint on opposing sides of a longest side of a rectangular shape. In another example embodiment a housing cover portion is inject molded from six sprues placed around a perimeter of a keyboard location having openings through which keys of the keyboard extend.

What is claimed is: 
     
         1 . A system for die cast of a magnesium aluminum alloy (Mg—Al ) information handling system housing portion, the system comprising:
 a hot runner module having an intake to accept the Mg—Al from above and plural outtakes to inject the Mg—Al to below; 
 plural sprues, each outtake injecting the Mg—Al through one of the plural sprues; and 
 a mold below the hot runner module and the plural sprues, the mold having a chamber shaped to form the housing portion, the plural sprues injecting Mg—Al into the mold to form the housing portion. 
 
     
     
         2 . The system of  claim 1  further comprising:
 two outtakes and two sprues; and 
 the mold having injection of the Mg—Al from opposing sides of the housing portion. 
 
     
     
         3 . The system of  claim 2  wherein the housing portion comprises a lid portion and each sprue is located at a midpoint of a longest side of the lid portion. 
     
     
         4 . The system of  claim 1  further comprising:
 six outtakes and six sprues; and 
 the mold having injection of the Mg—Al from above the housing portion. 
 
     
     
         5 . The system of  claim 4  wherein the housing portion comprises a housing cover portion that couples over a main housing portion to enclose processing components. 
     
     
         6 . The system of  claim 4  wherein the housing cover portion has a central region with plural openings formed to expose keys of a keyboard coupled below the cover portion through the plural openings. 
     
     
         7 . The system of  claim 6  wherein the six sprues couple to the mold along a perimeter of a keyboard that couples below the plural openings. 
     
     
         8 . The system of  claim 1  wherein housing portion comprises a housing main portion. 
     
     
         9 . The system of  claim 8  wherein the plural sprues inject the Mg—Al at a bottom side of the housing main portion. 
     
     
         10 . A method for forming an information handling system housing portion, the method comprising:
 accepting Mg—Al at a hot runner intake above a mold;   directing the Mg—Al to plural outtakes of the hot runner; and   injecting the Mg—Al from each of the plural outtakes through a sprue at each of the plural outtakes into a mold having a chamber shaped to form the housing portion.   
     
     
         11 . The method of  claim 10  further comprising:
 injecting the Mg—Al into the mold through two outtakes and two sprues; and 
 locating the sprues for the injecting into the mold at opposing sides of the housing portion. 
 
     
     
         12 . The method of  claim 11  wherein the housing portion comprises a lid portion and each sprue is located at a midpoint of a longest side of the lid portion. 
     
     
         13 . The method of  claim 10  further comprising:
 injecting the Mg—Al into the mold through six outtakes and six sprues; and 
 locating the sprues for injecting into the mold from above the housing portion. 
 
     
     
         14 . The method of  claim 13  wherein the housing portion comprises a housing cover portion that couples over a main housing portion to enclose processing components. 
     
     
         15 . The method of  claim 14  wherein the housing cover portion has a central region with plural openings formed to expose keys of a keyboard coupled below the cover portion through the plural openings, the six sprues coupled to the mold along a perimeter of a keyboard that couples below the plural openings. 
     
     
         16 . An information handling system housing portion product manufactured by a process comprising:
 accepting Mg—Al at a hot runner intake above a mold;   directing the Mg—Al to plural outtakes of the hot runner; and   injecting the Mg—Al from each of the plural outtakes through a sprue at each of the plural outtakes into a mold having a chamber shaped to form the housing portion.   
     
     
         17 . The information handling system housing portion product of  claim 16  further manufactured by the process comprising:
 injecting the Mg—Al into the mold through two outtakes and two sprues; and 
 locating the sprues for the injecting into the mold at opposing sides of the housing portion. 
 
     
     
         18 . The information handling system housing portion product of  claim 17  wherein the housing portion comprises a lid portion and each sprue is located at a midpoint of a longest side of the lid portion. 
     
     
         19 . The information handling system housing portion product of  claim 16  further manufactured by the process comprising:
 injecting the Mg—Al into the mold through six outtakes and six sprues; and 
 locating the sprues for injecting into the mold from above the housing portion. 
 
     
     
         20 . The information handling system housing portion product of  claim 19  wherein:
 the housing portion comprises a housing cover portion that couples over a main housing portion to enclose processing components; and 
 the housing cover portion has a central region with plural openings formed to expose keys of a keyboard coupled below the cover portion through the plural openings, the six sprues couple to the mold along a perimeter of a keyboard that couples below the plural openings.