utions ▁for ▁use ▁Select ing ▁the ▁suitable ▁m ould ▁for ▁the ▁material ▁to ▁be ▁stretch ed ▁or ▁the ▁m ould ▁will ▁be ▁crack ed . ▁The ▁m ould ▁should ▁be ▁tight ened ▁properly ▁at ▁the ▁stretch ed ▁direction ▁to ▁prevent ▁une ven ▁wear . ▁Lub ric ant ▁is ▁important ▁to ▁the ▁service ▁life ▁of ▁the ▁m ould . ▁The ▁user ▁should ▁select ▁suitable ▁lub ric ant ▁and ▁keep ▁the ▁m ould ▁using ▁in ▁a ▁clean ▁environment . ▁The ▁m ould ▁should ▁not ▁be ▁knock ed ▁or ▁cast ▁cas ually . ▁ ▁References ▁ ▁H ua ▁You lu , ▁Z hang ▁Sh ih ong , ▁Z hang ▁Jin li . ▁ ▁Fail ure ▁Analysis ▁of ▁C ement ed ▁Car b ide ▁Draw ing ▁Die ▁▁ ▁R are ▁Met als ▁and ▁C ement ed ▁Car b ides . ▁Sep . 2 0 0 3 , ▁Vol . 3 1 ▁No . 3 ▁ ▁External ▁links ▁T ung sten ▁Car b ide ▁W ire ▁Draw ing ▁Dies ; ▁t ung sten ; ▁car b ide ▁dies ; ▁t ung sten ▁car b ide ; ▁ ▁Category : Ind ust rial ▁processes <0x0A> </s> ▁The ▁Sub Ant ar ctic ▁Foundation ▁for ▁E cos ystem s ▁Research ▁( aka ▁S AF ER ), ▁founded ▁in ▁ 1 9 9 6 ▁by ▁New ▁Zealand - based ▁zo ologist ▁Dr . ▁Peter ▁Care y , ▁is ▁working ▁on ▁several ▁habitat ▁rest oration ▁projects ▁on ▁four ▁small ▁islands ▁that ▁S AF ER ▁own s ▁in ▁the ▁western ▁F alk land ▁Islands