FR2321351A1 - Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions - Google Patents

Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions

Info

Publication number
FR2321351A1
FR2321351A1 FR7523826A FR7523826A FR2321351A1 FR 2321351 A1 FR2321351 A1 FR 2321351A1 FR 7523826 A FR7523826 A FR 7523826A FR 7523826 A FR7523826 A FR 7523826A FR 2321351 A1 FR2321351 A1 FR 2321351A1
Authority
FR
France
Prior art keywords
forging
pref
blanks
forged
bolts
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
FR7523826A
Other languages
French (fr)
Other versions
FR2321351B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7523826A priority Critical patent/FR2321351A1/en
Publication of FR2321351A1 publication Critical patent/FR2321351A1/en
Application granted granted Critical
Publication of FR2321351B1 publication Critical patent/FR2321351B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J3/00—Lubricating during forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

Shafts, screws, bolts and similar metal parts are mass produced with high mechanical strength and very close dimensional tolerances, by forging round blanks obtd. by drawing and grinding. The blanks are coated with a lubricant resistant to heat and forging stress; and are then heated and precision-forged to obtain dimensional tolerances of 1/100th of a mm. Heating prior to forging is pref. below the transformation temp. of the metal or alloy used. The blanks are pref. first treated mechanically by shot blasting or descaling, and the lubricant is pref. a solid suspended in a polymerisable resin and sprayed onto the blank followed by polymerisation. Forging pref. produces both a head on the blank and a shank dia. suitable for thread formation; the forging is heat treated and cold thread-rolled. The forging process is used to mfr. e.g. Ti alloy parts for the aeronautical industry, where very accurate dimensions are required.
FR7523826A 1975-07-30 1975-07-30 Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions Granted FR2321351A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7523826A FR2321351A1 (en) 1975-07-30 1975-07-30 Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7523826A FR2321351A1 (en) 1975-07-30 1975-07-30 Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions

Publications (2)

Publication Number Publication Date
FR2321351A1 true FR2321351A1 (en) 1977-03-18
FR2321351B1 FR2321351B1 (en) 1978-06-23

Family

ID=9158537

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523826A Granted FR2321351A1 (en) 1975-07-30 1975-07-30 Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions

Country Status (1)

Country Link
FR (1) FR2321351A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715879A1 (en) * 1994-02-08 1995-08-11 Nizhegorodskoe Aktsionernoe Ob Mfr. of two-phase titanium alloy article, esp. bolt
EP1624084A1 (en) * 2004-07-28 2006-02-08 Rolls-Royce Plc A method of forging a titanium alloy
US20080067015A1 (en) * 2006-09-19 2008-03-20 Paul Thomas Brake carrier
CN102615239A (en) * 2012-04-17 2012-08-01 宁波金鹏高强度紧固件有限公司 Processing process of wheel hub screw bolt for automobile
EP2543453A4 (en) * 2009-12-09 2017-07-19 Korea Institute of Machinery and Materials Titanium alloy bolt manufacturing facility and method for manufacturing titanium alloy bolt using same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1617122A (en) * 1925-09-08 1927-02-08 Kaufman Charles Method of making screws and bolts
GB1172093A (en) * 1965-10-23 1969-11-26 Federal Mogul Corp Improvements in Forging Parts from Workpieces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1617122A (en) * 1925-09-08 1927-02-08 Kaufman Charles Method of making screws and bolts
GB1172093A (en) * 1965-10-23 1969-11-26 Federal Mogul Corp Improvements in Forging Parts from Workpieces

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ARTICLE "ANWENDUNG FESTER SCHMIERSTOFFE BEIM SCHMIEDEN" DOEHRING , PAGES 749 A 753 *
REVUE DT : WERKSTATT UND BETRIEB, VOLUME 104, NO. 10, OCTOBRE 1971 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715879A1 (en) * 1994-02-08 1995-08-11 Nizhegorodskoe Aktsionernoe Ob Mfr. of two-phase titanium alloy article, esp. bolt
EP1624084A1 (en) * 2004-07-28 2006-02-08 Rolls-Royce Plc A method of forging a titanium alloy
US7320238B1 (en) 2004-07-28 2008-01-22 Rolls-Royce Plc Method of forging a titanium alloy
US20080067015A1 (en) * 2006-09-19 2008-03-20 Paul Thomas Brake carrier
US9222532B2 (en) * 2006-09-19 2015-12-29 Meritor Heavy Vehicle Braking Systems (Uk) Limited Brake carrier
EP2543453A4 (en) * 2009-12-09 2017-07-19 Korea Institute of Machinery and Materials Titanium alloy bolt manufacturing facility and method for manufacturing titanium alloy bolt using same
CN102615239A (en) * 2012-04-17 2012-08-01 宁波金鹏高强度紧固件有限公司 Processing process of wheel hub screw bolt for automobile

Also Published As

Publication number Publication date
FR2321351B1 (en) 1978-06-23

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse