DICE FOR COLD DRAWING OF PIPE
PROBLEM TO BE SOLVED: To provide a dice for cold drawing of a pipe, which enables the drawing to be performed without causing cracks.SOLUTION: In a dice 1 for cold drawing, a bearing diameter and a tip diameter of the dice satisfy the following expression (1), and an external radius working ratio r/...
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| creator | KURODA KOICHI OKUI TATSUYA UGAWA YUSUKE |
| description | PROBLEM TO BE SOLVED: To provide a dice for cold drawing of a pipe, which enables the drawing to be performed without causing cracks.SOLUTION: In a dice 1 for cold drawing, a bearing diameter and a tip diameter of the dice satisfy the following expression (1), and an external radius working ratio r/L of immediately before the bearing satisfies the following expression (2), where r is an external radius working amount defined by (internal diameter of the dice in 5 mm position immediately before the bearing - a bearing diameter)/2 (mm), and L is a distance between the bearing and an external radius working amount set portion (for example, 5 mm). The expressions are: 0.80 |
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The expressions are: 0.80<bearing diameter/tip diameter<0.93...(1); and 0.03≤ r/L≤0.26...(2). 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The expressions are: 0.80<bearing diameter/tip diameter<0.93...(1); and 0.03≤ r/L≤0.26...(2). Particularly, the dice exhibits an effect for drawing of hard-to-work materials such as two-phase stainless steel or high alloy.</description><subject>AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL</subject><subject>MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING</subject><subject>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL</subject><subject>PERFORMING OPERATIONS</subject><subject>PUNCHING METAL</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJB18XR2VXDzD1Jw9vdxUXAJcgz39HNX8HdTCPAMcOVhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGhiYGhhYWhiaOxkQpAgCdqSD_</recordid><startdate>20140203</startdate><enddate>20140203</enddate><creator>KURODA KOICHI</creator><creator>OKUI TATSUYA</creator><creator>UGAWA YUSUKE</creator><scope>EVB</scope></search><sort><creationdate>20140203</creationdate><title>DICE FOR COLD DRAWING OF PIPE</title><author>KURODA KOICHI ; OKUI TATSUYA ; UGAWA YUSUKE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2014018814A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2014</creationdate><topic>AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL</topic><topic>MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING</topic><topic>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL</topic><topic>PERFORMING OPERATIONS</topic><topic>PUNCHING METAL</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KURODA KOICHI</creatorcontrib><creatorcontrib>OKUI TATSUYA</creatorcontrib><creatorcontrib>UGAWA YUSUKE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KURODA KOICHI</au><au>OKUI TATSUYA</au><au>UGAWA YUSUKE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DICE FOR COLD DRAWING OF PIPE</title><date>2014-02-03</date><risdate>2014</risdate><abstract>PROBLEM TO BE SOLVED: To provide a dice for cold drawing of a pipe, which enables the drawing to be performed without causing cracks.SOLUTION: In a dice 1 for cold drawing, a bearing diameter and a tip diameter of the dice satisfy the following expression (1), and an external radius working ratio r/L of immediately before the bearing satisfies the following expression (2), where r is an external radius working amount defined by (internal diameter of the dice in 5 mm position immediately before the bearing - a bearing diameter)/2 (mm), and L is a distance between the bearing and an external radius working amount set portion (for example, 5 mm). The expressions are: 0.80<bearing diameter/tip diameter<0.93...(1); and 0.03≤ r/L≤0.26...(2). Particularly, the dice exhibits an effect for drawing of hard-to-work materials such as two-phase stainless steel or high alloy.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING |
| title | DICE FOR COLD DRAWING OF PIPE |
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