US1683437A - Method of forming drawn articles - Google Patents

Method of forming drawn articles Download PDF

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Publication number
US1683437A
US1683437A US198677A US19867727A US1683437A US 1683437 A US1683437 A US 1683437A US 198677 A US198677 A US 198677A US 19867727 A US19867727 A US 19867727A US 1683437 A US1683437 A US 1683437A
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US
United States
Prior art keywords
blank
salt
forming
oxidation
heating
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.)
Expired - Lifetime
Application number
US198677A
Inventor
Joseph E Batie
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.)
Kelsey Wheel Co Inc
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Kelsey Wheel Co Inc
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 Kelsey Wheel Co Inc filed Critical Kelsey Wheel Co Inc
Priority to US198677A priority Critical patent/US1683437A/en
Application granted granted Critical
Publication of US1683437A publication Critical patent/US1683437A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating

Definitions

  • the invention relates to the method of forming drawn articles and refers more particularly to the method of forming brake drums.
  • One of the objects of the invention is to cover the article to prevent oxidation thereof during the heating.
  • Another object is to subsequently use the covering upon the article as a lubricant during the drawing. Further objects of the invention reside in the novel features as more fully hereinafter set forth.
  • Figures 1. and 2 are, respectively, an edge elevation and plan view of the blank from be formed and showing this blank in condition to be heated;
  • Figure 3 is an edge elevation of the blank while being heated
  • Figure 4 is a diagrammatic sectional view of the drawing apparatus and the drawn article.
  • the invention is designed particularly for drawing brake drums from flat blanks.
  • a mineral saltl As shown in Figures 1 and 2, a mineral saltl,
  • the fiat circular sheet metal blank 2 such as sodium carbonate or barium chloride or a combination of the two is poured upon the fiat circular sheet metal blank 2.
  • this salt being preferably in powder form.
  • the blank with the mineral salt thereon is then placed in a suitable heating furnace and while the blank is being heated the mineral salt is fused and spreads over the upper surface of the blank to cover the same.
  • This mineral salt being non-hygroscopic protects the upper surface of the blank from corrosion or 0X1- dation.
  • the blank After the blank has been heated to the desired temperature, it is then removed from the heating furnace and placed in the drawing die 3 with its surface covered by the fused mineral salt lowermost.
  • the plunger 4 of the drawing apparatus is then lowered and draws the blank to the desired shape forming the web 5 and the brake flange 6 of the brake drum.
  • the fused mineral salt also functions as a lubricant to facilitate the drawing.
  • the mineral salt may be suitably removed by passing through a bath.
  • the method of forming a drawn article which includes heating a blank and using a fused mineral salt to protect the blank from oxidation, and then drawing the blank and using the salt thereon as a lubricant during the drawing.
  • the method of forming a drawn article which includes placing a mineral salt on a blank, heating the blank and at the same time fusing the salt to spread over the blank and protect the same from oxidation, and then drawing the blank and using the salt thereon as a lubricant during the drawing.
  • the method of forming a drawn article which includes placing a powdered mineral salt on a flatsheet metal blank, heating the blank and at the same time fusing the salt to spread over the blank and protect the same from oxidation. then drawing the blank to shape and at the same time using the salt spread thereover as a lubricant during. the drawing. and then removing the salt from the blank.
  • the method of forming a brake drum or the like which includes placing a mineral salt on a flat sheet metal blank, heating the blank and at the same time fusing the salt to spread over the upper surface of the blank to protect the same from oxidation, and then drawing the blank While heated and with its salt covered surface in contact with the drawing die, and using the salt as a lubricant during the drawing.

Description

J. E. BATIE METHOD OF FORMING DRAWN ARTICLES Filed June 13, 1927 WJ ZZJMJ/u I ethane/30 which the article is to Patented Sept. 4, 1928.
UNITED STATES PATENT OFFICE.
JOSEPH E. BATIE, OF DETROIT, MICHIGAN, ASSIGNOR TO KELSEY WHEEL COMPANY, INC., 0 DETROIT, MICHIGAN, A. CORPORATION OF NEW YORK.
METHOD OF FORMING DRA WN ARTICLES.
Application filed June 13, 192:1. Serial No. 198,677.
The invention relates to the method of forming drawn articles and refers more particularly to the method of forming brake drums. One of the objects of the invention is to cover the article to prevent oxidation thereof during the heating. Another object is to subsequently use the covering upon the article as a lubricant during the drawing. Further objects of the invention reside in the novel features as more fully hereinafter set forth.
In the drawings Figures 1. and 2 are, respectively, an edge elevation and plan view of the blank from be formed and showing this blank in condition to be heated;
Figure 3 is an edge elevation of the blank while being heated;
Figure 4 is a diagrammatic sectional view of the drawing apparatus and the drawn article.
The invention is designed particularly for drawing brake drums from flat blanks. As shown in Figures 1 and 2, a mineral saltl,
' such as sodium carbonate or barium chloride or a combination of the two is poured upon the fiat circular sheet metal blank 2. this salt being preferably in powder form. The blank with the mineral salt thereon is then placed in a suitable heating furnace and while the blank is being heated the mineral salt is fused and spreads over the upper surface of the blank to cover the same. This mineral salt being non-hygroscopic protects the upper surface of the blank from corrosion or 0X1- dation. After the blank has been heated to the desired temperature, it is then removed from the heating furnace and placed in the drawing die 3 with its surface covered by the fused mineral salt lowermost. The plunger 4 of the drawing apparatus is then lowered and draws the blank to the desired shape forming the web 5 and the brake flange 6 of the brake drum. During this drawing, the fused mineral salt also functions as a lubricant to facilitate the drawing. After the brake drum has been formed the mineral salt may be suitably removed by passing through a bath.
From the above description, it will be seen that with my method the surface of the sheet metal blank which subsequently forms in the present instance the external surface of the brake flange is protected from corrosion or oxidation, especially during the heating of the blank and furthern'iore that the drawing of this blank is facilitated by the medium for preventing the corrosion or oxidation.
\Vhat I claim as my invention is:
1. The method of forming a drawn article, which includes heating a blank and using a fused mineral salt to protect the blank from oxidation, and then drawing the blank and using the salt thereon as a lubricant during the drawing.
2. The method of forming a drawn article, which includes placing a mineral salt on a blank, heating the blank and at the same time fusing the salt to spread over the blank and protect the same from oxidation, and then drawing the blank and using the salt thereon as a lubricant during the drawing.
3. The method of forming a drawn article, which includes placing a powdered mineral salt on a flatsheet metal blank, heating the blank and at the same time fusing the salt to spread over the blank and protect the same from oxidation. then drawing the blank to shape and at the same time using the salt spread thereover as a lubricant during. the drawing. and then removing the salt from the blank.
4. The method of forming a brake drum or the like, which includes placing a mineral salt on a flat sheet metal blank, heating the blank and at the same time fusing the salt to spread over the upper surface of the blank to protect the same from oxidation, and then drawing the blank While heated and with its salt covered surface in contact with the drawing die, and using the salt as a lubricant during the drawing.
In testimony whereof I aflix my signature.
JOSEPH E. BATIE.
US198677A 1927-06-13 1927-06-13 Method of forming drawn articles Expired - Lifetime US1683437A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538917A (en) * 1941-11-22 1951-01-23 Comptoir Ind Etirage Extrusion of metals
US2663928A (en) * 1950-07-13 1953-12-29 Jr Harry Lindsay Wheeler Process for machining porous metals
US2686488A (en) * 1948-01-14 1954-08-17 Harley A Montgomery Method of treating and cold deep drawing sheet metal
US2751312A (en) * 1950-08-01 1956-06-19 Metallurg Processes Co Lubricant composition containing powdered lithium carbonate and method of its application to metal bodies
US2756494A (en) * 1951-10-15 1956-07-31 Comptoir Ind Etirage Hot punching of metals
DE961611C (en) * 1941-11-22 1957-04-11 Comptoir Ind D Etirage Et Prof Lubrication process in the extrusion of metals that are particularly difficult to compress, including steel
US2893554A (en) * 1944-11-10 1959-07-07 Comptoir Ind Etirage Method of extruding metals
DE1117072B (en) * 1951-03-29 1961-11-16 Saint Gobain Lubricants for hot drawing or hot pressing metals that are difficult to draw or press
US3577753A (en) * 1968-09-30 1971-05-04 Bethlehem Steel Corp Method and apparatus for forming thin-walled cylindrical articles

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538917A (en) * 1941-11-22 1951-01-23 Comptoir Ind Etirage Extrusion of metals
DE961611C (en) * 1941-11-22 1957-04-11 Comptoir Ind D Etirage Et Prof Lubrication process in the extrusion of metals that are particularly difficult to compress, including steel
US2893554A (en) * 1944-11-10 1959-07-07 Comptoir Ind Etirage Method of extruding metals
US2686488A (en) * 1948-01-14 1954-08-17 Harley A Montgomery Method of treating and cold deep drawing sheet metal
US2663928A (en) * 1950-07-13 1953-12-29 Jr Harry Lindsay Wheeler Process for machining porous metals
US2751312A (en) * 1950-08-01 1956-06-19 Metallurg Processes Co Lubricant composition containing powdered lithium carbonate and method of its application to metal bodies
DE1117072B (en) * 1951-03-29 1961-11-16 Saint Gobain Lubricants for hot drawing or hot pressing metals that are difficult to draw or press
US2756494A (en) * 1951-10-15 1956-07-31 Comptoir Ind Etirage Hot punching of metals
US3577753A (en) * 1968-09-30 1971-05-04 Bethlehem Steel Corp Method and apparatus for forming thin-walled cylindrical articles

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