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          Gravity casting and foundry casting Comparison
          Author:admin  Update:2009-8-28  Hits:5695  

           

           

          Gravity Die Casting

           Foundry Casting

          Area under the equal production quantity

          About 100

          About 500

           

          Temperature of pouring

           

          950 degree

           

          1050 degree

          loss of copper (exclusive of recycle part )

          2%~3%

          6%~8%

           

          proportion of sprue ( finished casting and proportion of pouring)

           

          4:1 to 5:1 and sprue  is small

           

          2:1 to 1:1, and sprue is large

           

           

           

          Quality of product

          Casting thickness is uniformity, high density, the surface of inside and outside  is smoothly, consistent  overall dimensions, finishing fast, high polishing & machining efficiency

          To have slag on casting products the surface is roughness of both inside and outside, different overall dimensions, low efficiency on machining & polishing, consumption of materials and time-consuming & material consuming

           

            

          Rate of good products

          92% ~ 98% high pass rate (refer to placing sand core), the yield is higher if there is no sand cores in casting products

           

           

          High reject rate

           

           

           

           

          Labor efficiency

          Only7 persons (90KW frequency furnace, two sets of sand core blower machine, 2sets of gravity casting machine, one set of mix sand machine,

          staff:: sand core machine 2persons, Gravity casting 3persons,Edge Finish 2persons) , can be die-casted 900-1200pcs per 8 hours

           

           

           

           

          Above 14 persons

           

          State of pollution

          Gravity Casting lower pouring temperature required & less pollution

          Coal & oil furnace has air pollution during melting process

           

          State of operation

           Easy operation with only two hours training don’t need to  have deep technology

          Skilled technical requirements

           High physical exaction

           
          Copyright @ 2009 ORIENO PRECISION HARDWARE CO.,LTD. All Rights Reserved.
             

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