IT1072714B - Marking the position of flaws in hot billets - with marking powder ejected by pneumatic gun (NL 12.9.77) - Google Patents

Marking the position of flaws in hot billets - with marking powder ejected by pneumatic gun (NL 12.9.77)

Info

Publication number
IT1072714B
IT1072714B IT6767277A IT6767277A IT1072714B IT 1072714 B IT1072714 B IT 1072714B IT 6767277 A IT6767277 A IT 6767277A IT 6767277 A IT6767277 A IT 6767277A IT 1072714 B IT1072714 B IT 1072714B
Authority
IT
Italy
Prior art keywords
marking
powder
flaws
flaw
billet
Prior art date
Application number
IT6767277A
Other languages
Italian (it)
Original Assignee
Hoogovens Ijmuiden Bv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoogovens Ijmuiden Bv filed Critical Hoogovens Ijmuiden Bv
Priority to IT6767277A priority Critical patent/IT1072714B/en
Application granted granted Critical
Publication of IT1072714B publication Critical patent/IT1072714B/en

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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The roller conveyor delivers the hot billets to shearing blades. An ultra-sonic flaw detector emits a signal when an internal flaw is detected in the billet. This signal actuates a marking device by supplying compressed air to a cylinder. The movement of the piston rod opens a powder container so that a small amount of powder is ejected through a V-shaped slot in the marking head. The coloured heat-resisting powder marks the position of the flaw with a letter V. The operator operates a shear blade so that the defective portion of the billet is cropped off.
IT6767277A 1977-03-28 1977-03-28 Marking the position of flaws in hot billets - with marking powder ejected by pneumatic gun (NL 12.9.77) IT1072714B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT6767277A IT1072714B (en) 1977-03-28 1977-03-28 Marking the position of flaws in hot billets - with marking powder ejected by pneumatic gun (NL 12.9.77)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6767277A IT1072714B (en) 1977-03-28 1977-03-28 Marking the position of flaws in hot billets - with marking powder ejected by pneumatic gun (NL 12.9.77)

Publications (1)

Publication Number Publication Date
IT1072714B true IT1072714B (en) 1985-04-10

Family

ID=11304386

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6767277A IT1072714B (en) 1977-03-28 1977-03-28 Marking the position of flaws in hot billets - with marking powder ejected by pneumatic gun (NL 12.9.77)

Country Status (1)

Country Link
IT (1) IT1072714B (en)

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