Any mould what is life of mould?. how the calculation of mould life?

Dear Doberia

Generally life cycle is for 500,000 to 1million shots, if there is spare inserts to replace cycle will increase, some use soft steel for low volume of the parts, this gives lesser cycles

Mold life is decided as per quantum required before a mold is born. Necessary features are incorporated to give it the required life.Mainly the design of mould ( features incorporated in the mold, like guided ejection,parting line locks etc) and the materials used for mould making mainly mold base,housing, core & cavity ( Full hardened / hardened / prehardened etc) decide the mold life.. SPI classification is available for guidance.

I agree with Saravan and Raj. It starts with the grade of tool built (hardend tool steel cavity and cores) 1 million shot is realistic but the grade of resin is an imporntant factor. As a rule you get out what you put in (pay no or pay later)

The above is true, also part geometry and size of the part affects mold life. For example, we have a mold for fishing bobber stems, this mold will last over 10 million parts with some minor maintenance. We have a tray mold with side pockets, this mold requires significant maintenance at 400,000 parts. Both molds are heat treated.

I agree, but beyond the design of the mold and execution of it.
How the mold is run, and maintained feeds into the calculation. I have seen excellent tools torn to bits by poorly run molders, with little or no P.M. or conscience since they don't own the tool, or have not been paid by Tier-1 to take care of it... Sometimes you get even less than you pay for in the exchange...

I will also like to add ,that Machine will also play a role in mold life. A sturdy machine with excellent parallalism of platen will add more life to the mold. Similarly the precise mold protection can guard it against double shot. I remember a split mold where split used to move from its place while removing artical from mold and used to get damage in next cycle. If mold is required to be dismantle frequently for changing inserts or removing stuck/broken artical, it seriously affects its life. In short a mold running in Auto cycle on a precision control sturdy machine will give very good life even if it not fully hardened.

We, at Ivanhoe Tool & Die, have a reputation for designing and building high quality class 101 molds. We have many molds with over 25 million cycles on them, and are still running fully automatic 24 hours per day, 7 days per week. It does, as Mr. Parsons pointed out, also very much depend on the care and maintenance that the mold receives, and the quality and accuracy of the molding machine that the mold is run in.

mould life is based on which material we use to manufacture mould parts.likes cavity and core

Is there any Calculation for mould life consideration ?