Eventually, instead of printing from these directly, he employed them to stamp out intermediate dies which were then used as moulds to mass produce letter blocks made of a lead alloy.
The present invention discloses one kind of pressure cast modified zinc alloy produced by adding modifier or modifying intermediatealloy during pressure casting of zine alloy.
本发明公开了一种变质压铸锌合金，它是在常规的压铸锌合金生产过程中加入变质剂或变质剂中间合金。
3
Micro-channel device, protected alloy surface in catalyst, alumina supported catalyst, catalyst intermediate, and method for forming catalyst and micro-channel device.