Industrial 3D Printers/Sand 3D Printers/Binder Jetting Additive Manufacturing Guangdong Fenghua Zhuoli Technology Co., Ltd , https://www.fhzlcasting.com
Aco Mold has been using injection mold machines in my factory in China for 5 years. they have been running 24 hours for approc 280 days a year. running 60T, 120T, 180T 250T and 300T. We have not had to change screw sets any more frequent than I would have had to with previous machines I have operated (Arburg, Demag, Boy) from 11 injection molding machines we have had to replace injection cylinder seals due to wear after 4 years on the 120T presses. at 4 years old 1 injection molding machine needed a new main pump and another needed motor rebuild. I have replaced 4 valves as preventative maintainance. and that is it.we are producing a mix of consumer and high presition electronic parts. I agree teh resale value is nothing, but then for the buy price in china I write of teh vale on the plant equipment over 5 years so its not an issue. whilts i would love to buy EU machines then the price difference doe snot warrant it. Hatian 300T machine in China $50,000 USD. typical german machine same tonnage $150,000 USD. its a no brainier.
Mold manufacturers need to be concerned about cycle time if they want to help their customers maintain a competitive edge, improve efficiencies, productivity and profits in order to compete on a global basis.
Though this, there are different level mold suppliers in China, and the price between a good supplier and a bad supplier is quite different even there is 10 times different.. Because the the supplier area, mold equipment, molding processing, quality management is different.
This shows the venting in inadequate as someone mentioned above, Use the material recommended mold temperatures and verify id the projected area is sufficient. You will need to run some trials to see what is best suited injection parameters. The release agent is not recommended since it takes away from the mold efficiency and added cost. In addition all the recommendation above are good, since you are the closes to the mold and machine only you can judge what is best for your application. Follow Aco Mold on Facebook.
Honestly, there are so many mold suppliers can supply you in China and you can find one by following this guidelines, cuz the technology is becoming more and more mature in CAD/CAE/CAM technology etc.. and in 2010 year China auto parts needs 180 billion yuan!!