Method for producing a steel tube including cleaning of the outer tube wall
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B21B-045/02
B08B-007/00
B21B-021/00
B21B-038/00
출원번호
US-0778123
(2014-03-11)
등록번호
US-9808844
(2017-11-07)
우선권정보
DE-10 2013 102 703 (2013-03-18)
국제출원번호
PCT/EP2014/054729
(2014-03-11)
국제공개번호
WO2014/146935
(2014-09-25)
발명자
/ 주소
Frobose, Thomas
Rauffmann, Udo
출원인 / 주소
Sandvik Materials Technology Deutschland GMBH
대리인 / 주소
Morgan, Lewis & Bockius LLP
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A method for producing a steel tube include the manufacturing of a steel tube having an inner tube wall, an outer tube wall (3), and a free tube cross-section enclosed by the inner tube wall. After the manufacturing, the steel tube includes at least one contaminant on the outer tube wall and entails
A method for producing a steel tube include the manufacturing of a steel tube having an inner tube wall, an outer tube wall (3), and a free tube cross-section enclosed by the inner tube wall. After the manufacturing, the steel tube includes at least one contaminant on the outer tube wall and entails, after the manufacturing of the steel tube, cleaning of the outer tube wall by applying liquid or solid CO2 onto the outer tube wall in order to remove a contaminant from the outer tube wall.
대표청구항▼
1. A method for producing a steel tube comprising: manufacturing the steel tube by forming a hollow shell into a form of a finished dimensioned steel tube by cold pilgering, the steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, w
1. A method for producing a steel tube comprising: manufacturing the steel tube by forming a hollow shell into a form of a finished dimensioned steel tube by cold pilgering, the steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, wherein after the manufacturing, the steel tube on the outer tube wall includes at least one contaminant, the at least one contaminant being a lubricant transferred from a roll to the outer tube wall; andcleaning the outer tube wall of the steel tube by applying liquid or solid CO2 onto the outer tube wall in order to remove the lubricant from the outer tube wall,wherein, during the application of the liquid or solid CO2 onto the outer tube wall, the temperature of the steel tube is measured and the cleaning is interrupted if the temperature of the steel tube falls below a predetermined temperature threshold. 2. The method according to claim 1, wherein the cleaning of the outer tube wall is performed by CO2 snow blasting or by dry ice blasting. 3. The method according to claim 1, wherein the liquid or solid CO2 is applied onto the outer tube wall by pressurized air. 4. The method according claim 1, wherein the liquid or solid CO2 is applied in the form of a jet onto the outer tube wall, wherein a jet direction of the CO2 is substantially perpendicular to the outer tube wall. 5. The method according to claim 4, wherein a temperature of the jet is measured in the jet direction of the liquid or solid CO2 after the liquid or solid CO2 has interacted with the outer tube wall of the steel tube. 6. The method according to claim 5, wherein a velocity of the liquid or solid CO2 as it exits a feed line is regulated as a function of the temperature of the jet in the jet direction of the liquid or solid CO2 after the liquid or solid CO2 has interacted with the outer tube wall of the steel tube. 7. The method according to claim 1, wherein the steel tube is rotated during the cleaning under a jet of the liquid or solid CO2 . 8. The method according to claim 1, wherein, during the cleaning, a jet of liquid or solid CO2 is applied in a longitudinal direction over the outer wall of the steel tube. 9. A method for producing a steel tube comprising: manufacturing the steel tube by forming a hollow shell into a form of a finished dimensioned steel tube by cold drawing the hollow shell into the form of the finished steel tube, the steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, wherein after the manufacturing, the steel tube on the outer tube wall includes at least one contaminant, the at least one contaminant being a drawing oil transferred from a die to the outer tube wall;cleaning the outer tube wall by applying liquid or solid CO2 onto the outer tube wall in order to remove the drawing oil from the outer tube wall;measuring a temperature of the steel tube during cleaning; andinterrupting the cleaning when the measured temperature of the steel tube is below a predetermined temperature threshold. 10. The method according claim 9, wherein the liquid or solid CO2 is applied in the form of a jet onto the outer tube wall, wherein a jet direction of the CO2 is substantially perpendicular to the outer tube wall. 11. The method according to claim 10, wherein a temperature of the jet is measured in the jet direction of the liquid or solid CO2 after the liquid or solid CO2 has interacted with the outer tube wall of the steel tube. 12. The method according to claim 11, wherein a velocity of the liquid or solid CO2 as it exits a feed line is regulated as a function of the temperature of the jet in the jet direction of the liquid or solid CO2 after the liquid or solid CO2 has interacted with the outer tube wall of the steel tube. 13. A method for producing a steel tube comprising: manufacturing the steel tube by forming a hollow shell into a form of a finished dimensioned steel tube by cold pilgering, the steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, wherein after the manufacturing, the steel tube on the outer tube wall includes at least one contaminant, the at least one contaminant being a lubricant transferred from a roll to the outer tube wall; andcleaning the outer tube wall of the steel tube by applying liquid or solid CO2 onto the outer tube wall in order to remove the lubricant from the outer tube wall;wherein the liquid or solid CO2 is applied in the form of a jet onto the outer tube wall, wherein a jet direction of the CO2 is substantially perpendicular to the outer tube wall.,wherein a temperature of the jet is measured in the jet direction of the liquid or solid CO2 after the liquid or solid CO2 has interacted with the outer tube wall of the steel tube, andwherein a velocity of the liquid or solid CO2 as it exits a feed line is regulated as a function of the temperature of the jet in the jet direction of the liquid or solid CO2 after the liquid or solid CO2 has interacted with the outer tube wall of the steel tube.
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