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CHUN ZU MACHINERY INDUSTRY CO., LTD.
| CHUN ZU MACHINERY INDUSTRY CO., LTD. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110034259 | METHOD OF MAKING A WASHER - A method of making a washer includes the steps of cutting a section of a wire material to form a blank, forging the blank in a first forging unit to form a rough blank that is larger in width and smaller in thickness than the blank, forging the rough blank in a second forging unit to form a prototype disc that is larger in width than the rough blank, and stamping and cutting the prototype disc in a third forging unit to form the washer. | 02-10-2011 |