Difference Of Hot and Cold Elbow Forming
Hot Elbow Forming For Carbon Steel Elbow?
Advantage:
1.????High Efficiency, one day 8 hours can produce thousands pcs carbon steel elbow .
2.????Good quality, produced elbow no matter wall thinning is the lowest or dimension are all best.
3.????Big diameter ratio change, normally from 1.2 times to 2 times. that is you can choose small diameter mother pipe to produce big diameter pipe, since most of seamless pipe or alloy pipe, stainless pipe are small diameter. For big diameter elbow made of seamless pipe or P91 / stainless steel hot elbow forming is the best choice .
4.?????Mother pipe just cut common round shape tube is ok.
5.????Can produce extreme diameter elbow ,like nuclear TP321 stainless elbow.
6.????Auto loading is very successful.
Disadvantage:
1.????Need one more machine, the press machine , since the mandrel and mold are separated working , so two machines needed.
2.????More space needed, since the elbow machine is much longer.
3.????Lubrication material is not friendly, much dirty to the surroundings.
4.????Operation needs special training.
5.????Produce stainless elbow is much lower efficiency since the magnetic permeability is too low.
Cold Elbow Machine For Stainless Elbow
Advantage:
1.????Save space ,much smaller machine.
2.????Easy operation, simple machine ,simple operation.
3.????Lubrication is very friendly, just common food oil is ok.
4.????Stainless elbow best choice.
5.????Since the mandrel and mold work at the same machine ,so no need the press machine.
Disadvantage
1.????Lower efficiency
2.????Mother pipe needs have angle
3.????Mother pipe needs to be the same diameter with the elbow
4.????Much higher wall thinning of outer arc up to 15% ,and elbow dimension not perfect.
5.????To produce carbon steel elbow n both ends much easier to crack.and cause damage to the mold.
Welcome to contact to me learn more about elbow forming technology.
www.limingbending.com
Mobile:0086 13931703233
Mars Dong