JPS572829A - Manufacture of steel product with superior suitability to pickling - Google Patents

Manufacture of steel product with superior suitability to pickling

Info

Publication number
JPS572829A
JPS572829A JP7717180A JP7717180A JPS572829A JP S572829 A JPS572829 A JP S572829A JP 7717180 A JP7717180 A JP 7717180A JP 7717180 A JP7717180 A JP 7717180A JP S572829 A JPS572829 A JP S572829A
Authority
JP
Japan
Prior art keywords
pickling
al2o3
hot
products
powder
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP7717180A
Other languages
Japanese (ja)
Other versions
JPS6013407B2 (en
Inventor
Motoharu Nakamura
Toshio Odajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP7717180A priority Critical patent/JPS6013407B2/en
Publication of JPS572829A publication Critical patent/JPS572829A/en
Publication of JPS6013407B2 publication Critical patent/JPS6013407B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PURPOSE:To reduce the amount of secondary scale formed on the surfaces of steel products and to enhance the suitability of the scale to pickling by coating the products with a mixture of siC powder and Al2O3 powder and with an antioxidant in order before hot-rolling the products. CONSTITUTION:When steel products such as a slab and a billet are heated to 900- 1,400 deg.C and hot-rolled, fine SiC powder having <=20mum size is mixed with fine Al2O3 powder having <=7mum size so as to make the ratio of Al2O3/(SiC+ Al2O3) 0.2-0.8, and the steel products are coated with the mixture by 20- 600g/m<2> using an inorg. binder such as sodium silicate or polyphosphoric acid. They are further coated with an antioxidant, heated, and hot-rolled. Thus, secondary scale is formed by a small amount during the hot-rolling and the following process, and it can be removed thoroughly by pickling with hydrochloric acid, sulfuric acid or the like in a short time.
JP7717180A 1980-06-10 1980-06-10 Method for manufacturing steel materials with excellent pickling properties Expired JPS6013407B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7717180A JPS6013407B2 (en) 1980-06-10 1980-06-10 Method for manufacturing steel materials with excellent pickling properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7717180A JPS6013407B2 (en) 1980-06-10 1980-06-10 Method for manufacturing steel materials with excellent pickling properties

Publications (2)

Publication Number Publication Date
JPS572829A true JPS572829A (en) 1982-01-08
JPS6013407B2 JPS6013407B2 (en) 1985-04-06

Family

ID=13626342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7717180A Expired JPS6013407B2 (en) 1980-06-10 1980-06-10 Method for manufacturing steel materials with excellent pickling properties

Country Status (1)

Country Link
JP (1) JPS6013407B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6071756A (en) * 1983-09-22 1985-04-23 フオルクスアイグナ−　ベトリ−プ　フオルスタ−トウフアブリケン Fibrous flat structure having surface effect
AU718145B2 (en) * 1997-12-05 2000-04-06 Mitsubishi Heavy Industries, Ltd. Method and system for suppressing formation of scale in hot finishing mill system
CN105177248A (en) * 2015-08-28 2015-12-23 济南昊泽环保科技有限公司 High-temperature-resistant oxidation and decarbonization preventing coating for workpiece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6071756A (en) * 1983-09-22 1985-04-23 フオルクスアイグナ−　ベトリ−プ　フオルスタ−トウフアブリケン Fibrous flat structure having surface effect
AU718145B2 (en) * 1997-12-05 2000-04-06 Mitsubishi Heavy Industries, Ltd. Method and system for suppressing formation of scale in hot finishing mill system
CN105177248A (en) * 2015-08-28 2015-12-23 济南昊泽环保科技有限公司 High-temperature-resistant oxidation and decarbonization preventing coating for workpiece

Also Published As

Publication number Publication date
JPS6013407B2 (en) 1985-04-06

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