US20170361368A1 - Stamped and welded process for making steel rectangular or square tubular parts and parts therefrom - Google Patents
Stamped and welded process for making steel rectangular or square tubular parts and parts therefrom Download PDFInfo
- Publication number
- US20170361368A1 US20170361368A1 US15/621,066 US201715621066A US2017361368A1 US 20170361368 A1 US20170361368 A1 US 20170361368A1 US 201715621066 A US201715621066 A US 201715621066A US 2017361368 A1 US2017361368 A1 US 2017361368A1
- Authority
- US
- United States
- Prior art keywords
- longitudinal
- score line
- longitudinal section
- making
- section
- 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.)
- Abandoned
Links
Images
Classifications
-
- 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
- B21D22/02—Stamping using rigid devices or tools
- B21D22/025—Stamping using rigid devices or tools for tubular articles
-
- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00Â -Â B21D9/00; Twisting
- B21D11/08—Bending by altering the thickness of part of the cross-section of the work
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
Definitions
- An object of the present invention is to provide a method for producing a steel square or rectangular pipe with an improved process.
- Another object of the present invention is to provide a method for producing a steel square or rectangular pipe which minimizes stress and distortion on steel material and enables forming a more accurate product.
- Yet another object is to provide an improved a steel square or rectangular pipe.
- Still another object to provide a less expensive steel square or rectangular pipe with ease of sizing and shaping.
- one aspect of the invention is directed to a method of making steel square or rectangular pipe.
- the method includes the steps of providing a generally planar steel plate having a predetermined thickness, a front surface and a back surface, a first longitudinal edge and a second longitudinal edge, and a first transverse edge and a second transverse edge, scoring a plurality of lines longitudinally across the back surface, wherein a first longitudinal score line is a first predetermined length X from the first longitudinal edge defining a first longitudinal section, a second longitudinal score line adjacent the first longitudinal score line is the predetermined length X therefrom defining a second longitudinal section, a third longitudinal score line adjacent the second longitudinal score line is the predetermined length X therefrom defining a third longitudinal section, and also is the predetermined length X from the second longitudinal edge defining a fourth longitudinal section.
- the method includes applying sufficient forces on the first longitudinal section and the second longitudinal section in a manner to form approximately 90 degree bend at the first longitudinal score line and applying sufficient forces on the fourth longitudinal section and the third longitudinal section in a manner to form approximately 90 degree bend at the third longitudinal score line, applying sufficient forces on the second longitudinal section and the third longitudinal section in a manner to form approximately 90 degree bend at the second longitudinal score line thereby causing the first and second longitudinal edges to abut.
- the method further includes applying a weld on the the first and second longitudinal edges to form a square steel pipe.
- the method includes the steps of providing a generally planar steel plate having a predetermined thickness, a front surface and a back surface, a first longitudinal edge and a second longitudinal edge, and a first transverse edge and a second transverse edge, scoring a plurality of lines longitudinally across the back surface, wherein a first longitudinal score line is a first predetermined length X from the first longitudinal edge defining a first longitudinal section, a second longitudinal score line adjacent the first longitudinal score line is a second predetermined length Y from the first longitudinal score line defining a second longitudinal section, a third longitudinal score line adjacent the second longitudinal score line is a second predetermined length 2 X from the second longitudinal score line defining a third longitudinal section, and a fourth longitudinal score line adjacent the third longitudinal score line is the predetermined length Y defining a fourth longitudinal section and the fourth longitudinal score line is the predetermined length X from the second longitudinal edge defining a fifth longitudinal section.
- the method includes applying sufficient forces on the first longitudinal section and the second longitudinal section in a manner to form an approximately 90 degree bend at the first longitudinal score line and applying sufficient forces on the fifth longitudinal section and the fourth longitudinal section in a manner to form an approximately 90 degree bend at the fourth longitudinal score line.
- the method further includes applying sufficient forces on the second longitudinal section and the third longitudinal section in a manner to form approximately 90 degree bend at the second longitudinal score line and applying sufficient forces on the third longitudinal section and the fourth longitudinal section in a manner to form approximately 90 degree bend at the third longitudinal score line thereby causing the first and second longitudinal edges to abut.
- the method further includes applying a weld on the the first and second longitudinal edges to form a rectangular steel pipe.
- the method can provide score lines by way of a stamping tool.
- the tool can also include a die tool face to provide the score lines and optionally other desired features in the pipe, such open surfaces in one or more of the longitudinal sections which can be coaxial aligned, for example.
- a steel pipe which includes a steel plate formed with at least four sides of equal length and having opposing sections of equal width wherein all sides have a predetermined thickness, including two outermost sections welded together at a respective outermost edge thereof, and each remaining section integrally connecting to another section generally at a 90 degree bend and having a scoring line internally formed longitudinally across an internal surface which serves to impart the 90 degree bend.
- FIG. 1 is a schematic of forming a square steel pipe of the instant invention.
- FIG. 2A is a schematic of forming a rectangular steel pipe of the instant invention.
- FIG. 2B is another schematic of forming a rectangular steel pipe of the instant invention.
- FIG. 3 is a schematic of a stamping mechanism to form the steel pipe of the instant invention.
- FIG. 4 is an exploded view of a part of FIG. 3 .
- FIG. 5 shows a plate of the invention with score lines for forming a square pipe.
- FIG. 6A shows another plate of the invention with score lines for forming a rectangular pipe.
- FIG. 6B shows still another plate of the invention with score lines for forming a rectangular pipe.
- the process and method of forming the steel square or rectangular shaped tubular pipe of the invention is generally referred to by the numeral 10 , wherein like parts include like numerals.
- the invention provides a stamping tool 12 having s plurality of precision formed cutting/scoring die faces 14 that score or cut and form score lines 18 on steel plate 20 into a desired shape or profile.
- the die face 14 is made from hardenable tool steel and contain cutting and forming sections made from carbide or various other hard, wear-resistant materials.
- the stamping tool 12 can include one or more angle forming members 16 having a male angled V-shaped face 17 having a leading edge 21 and female angle V-shaped face 19 providing a seat between which the plate 20 is placed in a manner such that a score line 18 aligns with the leading edge 21 of each male angled V-shaped face 17 .
- a drive hump 27 is provided to drive one free section (e.g., 136 E) under another free section (e.g., 136 A).
- the invention is performed using metal stamping tool 12 to form the shape of the pipe 50 , 150 along with features, and holes, providing a weld fixture and equipment to form the weld seam on the pipe 50 , 150 as will be discussed and providing sanding and polishing equipment as needed for the pipe 50 , 150 to grind/sand the weld seam flush with a wall of the pipe 50 , 150 .
- a method of making steel square pipe 50 is provided.
- the method includes the following steps. Step one is to provide a generally planar and rectangular or square steel plate 20 having a predetermined thickness, a front surface 22 and a back surface 24 , a first longitudinal edge 26 and a second longitudinal edge 28 , and a first transverse edge 30 and a second transverse edge 32 .
- Step two is to provide scoring a plurality of lines 34 longitudinally across the back surface 24 , wherein a first longitudinal score line 34 A is a first predetermined length X from the first longitudinal edge 24 defining a first longitudinal section 36 A, a second longitudinal score line 34 B adjacent and parallel the first longitudinal score line 34 A is the predetermined length X therefrom defining a second longitudinal section 36 B, a third longitudinal score line 34 C adjacent and parallel the second longitudinal score line is the predetermined length X therefrom defining a third longitudinal section 36 C, and also is the predetermined length X from the second longitudinal edge 28 defining a fourth longitudinal section 36 D.
- Step three includes applying sufficient forces on the first longitudinal section 36 A and the second longitudinal section 36 B in a manner to form approximately 90 degree bend at the first longitudinal score line 34 A and applying sufficient forces on the fourth longitudinal section 36 D and the third longitudinal section 36 C in a manner to form approximately 90 degree bend at the third longitudinal score line 34 C, applying sufficient forces on the second longitudinal section 36 B and the third longitudinal section 36 C in a manner to form approximately 90 degree bend at the second longitudinal score line 34 B thereby causing the first and second longitudinal edges 26 and 28 to abut.
- Step 3 can also include over bending two opposing longitudinal sections (e.g., 36 A and 36 C) such that the first and second longitudinal edges 26 and 28 temporarily overlap prior to springing back to abutted position.
- a cam mechanism as described below can be used in this regard.
- Step 4 includes applying a weld surface 40 on the first and second longitudinal edges 26 and 28 to form square steel pipe 50 .
- the method can include smoothing the weld surface 40 .
- FIGS. 2A and 2B provide exemplary methods for forming rectangular steel tube 150 showing width variations, wherein the method includes the following steps.
- Step one is providing a generally square or rectangular planar steel plate 120 having a predetermined thickness, a front surface 122 and a back surface 124 , a first longitudinal edge 126 and a second longitudinal edge 128 , and a first transverse edge 130 and a second transverse edge 132 .
- Step two includes scoring a plurality of lines 134 longitudinally across the back surface 124 , wherein a first longitudinal score line 134 A is a first predetermined length X from the first longitudinal edge 126 defining first longitudinal section 136 A, a second longitudinal score line 134 A adjacent and parallel the first longitudinal score line 134 A is a second predetermined length Y therefrom defining second longitudinal section 136 B, a third longitudinal score line 134 C adjacent and parallel the second longitudinal score line 134 B is a second predetermined length 2 X therefrom defining third longitudinal section 136 C, and a fourth longitudinal score line 134 D adjacent and parallel the third longitudinal score line 134 C is the predetermined length Y therefrom defining fourth longitudinal section 136 D and the fourth longitudinal score line 134 D is the predetermined length X from the second longitudinal edge 128 defining fifth longitudinal section 136 E.
- Step 3 includes applying sufficient forces on the first longitudinal section 136 A and the second longitudinal section 136 B in a manner to form an approximately 90 degree bend at the first longitudinal score line and applying sufficient forces on the fifth longitudinal section 136 E and the fourth longitudinal section 136 D in a manner to form an approximately 90 degree bend at the fourth longitudinal score line 134 D, and further includes applying sufficient forces on the second longitudinal section 136 B and the third longitudinal section 136 C in a manner to form approximately 90 degree bend at the second longitudinal score line 134 B and applying sufficient forces on the third longitudinal section 136 C and the fourth longitudinal section 136 D in a manner to form approximately 90 degree bend at the third longitudinal score line 134 C thereby causing the first and second longitudinal edges 126 and 128 to abut.
- This step can include over bending two opposing longitudinal sections (e.g., 136 B and 136 D relative to 136 C) using the drive hump 27 and cams 23 and 25 such that the first and second longitudinal edges 126 and 128 temporarily overlap prior to springing back to abutted position.
- the method further includes applying a weld surface 140 on the first and second longitudinal edges 126 and 128 to form rectangular steel pipe 150 .
- the method can include smoothing the weld surface 140 .
- the method can provide score lines by way of stamping tool 12 having tool die tool face 14 to provide the score lines and optionally other desired features in the pipe 50 , 150 to form open surfaces in one or more of the longitudinal sections 36 , 136 wherein such open surfaces can be coaxial aligned, for example.
- Steel square and rectangular tubular parts can be manufactured with specific holes, shapes and features in a stamped production process with no or less secondary processes.
- the die face 14 is configured to score all said scoring lines at once and can be removable to provide such features as required.
- the stamping process for making the pip 50 , 150 allows added holes, shapes and features to be incorporated as needed.
- the weld process can accommodate the finished tubular product by welding only as needed.
- the sanding/polishing process is used as needed to finish or smooth the exterior of the pipe 50 , 150 as needed.
- the invention provides for manufacture of any metal square or rectangular parts.
- This invention allows steel tubular parts to be manufactured with more detail, less cost and processes, consistent quality, more options for steel types, and more options for sizes of tubing. It minimizes costs and operations for making steel rectangular and square products and assemblies. It allows the ability to minimize the amount of parts to make a product or assembly. It allows the use of different steel types and sizes of shapes.
- Prior steel square or rectangular shaped tubular parts and products typically made with rolling mills which require pre and post operations for adding additional shapes and holes. Only specific sizes and shapes can be purchased typically.
- the instant invention solves this problem and provides for more options for sizes and shapes and openings to be formed at reduced cost.
- the metal is stretched and compressed requiring tolerances on the finished product to be increased.
- the instant invention solves this problem and minimizes the stresses and distortion on the material and makes for a more accurate product.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
Description
- This application claims the benefit from U.S. Provisional Application Ser. No. 62/351121 filed Jun. 16, 2016.
- Conventional methods for making steel pipes that become approximately square steel tube pass a preformed cylindrical tube through a series of a plurality of forming rolls (rolling mills) to gradually form a square shape steel pipe. Various considerations are taken into account with respect to the corners and weld hardness of the base material. The hardness value, therefore, it will lead to the yield strength of the corner portion and the weld portion becomes large, ductility becomes low, and during the second welding there is a danger of cracks. It takes special management, and because the mechanical properties uneven residual stress is generated, it is also difficult to carry out cutting work. The conventional method of forming steel square or rectangular shaped tubular parts and products require pre and post operations for adding additional shapes and holes. Only specific sizes and shapes can be purchased typically.
- Accuracy and tolerances of features, holes and trim lines need to be greater with the current processes. Only specific sizes and shapes are typically readily available.
- There remains a need to improve steel square or rectangular shaped tubular parts and the method of making the same. This instant invention solves the prior problems in the art.
- An object of the present invention is to provide a method for producing a steel square or rectangular pipe with an improved process.
- Another object of the present invention is to provide a method for producing a steel square or rectangular pipe which minimizes stress and distortion on steel material and enables forming a more accurate product.
- Yet another object is to provide an improved a steel square or rectangular pipe.
- Still another object to provide a less expensive steel square or rectangular pipe with ease of sizing and shaping.
- Accordingly, one aspect of the invention is directed to a method of making steel square or rectangular pipe. In the case of forming a square pipe, the method includes the steps of providing a generally planar steel plate having a predetermined thickness, a front surface and a back surface, a first longitudinal edge and a second longitudinal edge, and a first transverse edge and a second transverse edge, scoring a plurality of lines longitudinally across the back surface, wherein a first longitudinal score line is a first predetermined length X from the first longitudinal edge defining a first longitudinal section, a second longitudinal score line adjacent the first longitudinal score line is the predetermined length X therefrom defining a second longitudinal section, a third longitudinal score line adjacent the second longitudinal score line is the predetermined length X therefrom defining a third longitudinal section, and also is the predetermined length X from the second longitudinal edge defining a fourth longitudinal section. The method includes applying sufficient forces on the first longitudinal section and the second longitudinal section in a manner to form approximately 90 degree bend at the first longitudinal score line and applying sufficient forces on the fourth longitudinal section and the third longitudinal section in a manner to form approximately 90 degree bend at the third longitudinal score line, applying sufficient forces on the second longitudinal section and the third longitudinal section in a manner to form approximately 90 degree bend at the second longitudinal score line thereby causing the first and second longitudinal edges to abut. The method further includes applying a weld on the the first and second longitudinal edges to form a square steel pipe.
- In the case of forming rectangular steel tube, the method includes the steps of providing a generally planar steel plate having a predetermined thickness, a front surface and a back surface, a first longitudinal edge and a second longitudinal edge, and a first transverse edge and a second transverse edge, scoring a plurality of lines longitudinally across the back surface, wherein a first longitudinal score line is a first predetermined length X from the first longitudinal edge defining a first longitudinal section, a second longitudinal score line adjacent the first longitudinal score line is a second predetermined length Y from the first longitudinal score line defining a second longitudinal section, a third longitudinal score line adjacent the second longitudinal score line is a second predetermined length 2X from the second longitudinal score line defining a third longitudinal section, and a fourth longitudinal score line adjacent the third longitudinal score line is the predetermined length Y defining a fourth longitudinal section and the fourth longitudinal score line is the predetermined length X from the second longitudinal edge defining a fifth longitudinal section. The method includes applying sufficient forces on the first longitudinal section and the second longitudinal section in a manner to form an approximately 90 degree bend at the first longitudinal score line and applying sufficient forces on the fifth longitudinal section and the fourth longitudinal section in a manner to form an approximately 90 degree bend at the fourth longitudinal score line. The method further includes applying sufficient forces on the second longitudinal section and the third longitudinal section in a manner to form approximately 90 degree bend at the second longitudinal score line and applying sufficient forces on the third longitudinal section and the fourth longitudinal section in a manner to form approximately 90 degree bend at the third longitudinal score line thereby causing the first and second longitudinal edges to abut. The method further includes applying a weld on the the first and second longitudinal edges to form a rectangular steel pipe.
- The method can provide score lines by way of a stamping tool. The tool can also include a die tool face to provide the score lines and optionally other desired features in the pipe, such open surfaces in one or more of the longitudinal sections which can be coaxial aligned, for example.
- A steel pipe is provided which includes a steel plate formed with at least four sides of equal length and having opposing sections of equal width wherein all sides have a predetermined thickness, including two outermost sections welded together at a respective outermost edge thereof, and each remaining section integrally connecting to another section generally at a 90 degree bend and having a scoring line internally formed longitudinally across an internal surface which serves to impart the 90 degree bend.
-
FIG. 1 is a schematic of forming a square steel pipe of the instant invention. -
FIG. 2A is a schematic of forming a rectangular steel pipe of the instant invention. -
FIG. 2B is another schematic of forming a rectangular steel pipe of the instant invention. -
FIG. 3 is a schematic of a stamping mechanism to form the steel pipe of the instant invention. -
FIG. 4 is an exploded view of a part ofFIG. 3 . -
FIG. 5 shows a plate of the invention with score lines for forming a square pipe. -
FIG. 6A shows another plate of the invention with score lines for forming a rectangular pipe. -
FIG. 6B shows still another plate of the invention with score lines for forming a rectangular pipe. - Referring now to the drawings, the process and method of forming the steel square or rectangular shaped tubular pipe of the invention is generally referred to by the
numeral 10, wherein like parts include like numerals. The invention provides astamping tool 12 having s plurality of precision formed cutting/scoringdie faces 14 that score or cut and form score lines 18 onsteel plate 20 into a desired shape or profile. The dieface 14 is made from hardenable tool steel and contain cutting and forming sections made from carbide or various other hard, wear-resistant materials. - The
stamping tool 12 can include one or moreangle forming members 16 having a male angled V-shaped face 17 having a leadingedge 21 and female angle V-shaped face 19 providing a seat between which theplate 20 is placed in a manner such that a score line 18 aligns with the leadingedge 21 of each male angled V-shaped face 17. In the case of forming therectangular pipe 150, there are providedopposing cams sides plate 20 to overlap and spring back to a 90 degree angle as a function of the material strength and memory. In this regard, adrive hump 27 is provided to drive one free section (e.g., 136E) under another free section (e.g., 136A). - Generally speaking, the invention is performed using
metal stamping tool 12 to form the shape of thepipe pipe pipe pipe - A method of making steel
square pipe 50 is provided. In the case of forming asquare pipe 50 as inFIG. 1 , the method includes the following steps. Step one is to provide a generally planar and rectangular orsquare steel plate 20 having a predetermined thickness, afront surface 22 and aback surface 24, a firstlongitudinal edge 26 and a secondlongitudinal edge 28, and a firsttransverse edge 30 and a secondtransverse edge 32. Step two is to provide scoring a plurality of lines 34 longitudinally across theback surface 24, wherein a firstlongitudinal score line 34A is a first predetermined length X from the firstlongitudinal edge 24 defining a firstlongitudinal section 36A, a secondlongitudinal score line 34B adjacent and parallel the firstlongitudinal score line 34A is the predetermined length X therefrom defining a secondlongitudinal section 36B, a thirdlongitudinal score line 34C adjacent and parallel the second longitudinal score line is the predetermined length X therefrom defining a thirdlongitudinal section 36C, and also is the predetermined length X from the secondlongitudinal edge 28 defining a fourthlongitudinal section 36D. Step three includes applying sufficient forces on the firstlongitudinal section 36A and the secondlongitudinal section 36B in a manner to form approximately 90 degree bend at the firstlongitudinal score line 34A and applying sufficient forces on the fourthlongitudinal section 36D and the thirdlongitudinal section 36C in a manner to form approximately 90 degree bend at the thirdlongitudinal score line 34C, applying sufficient forces on the secondlongitudinal section 36B and the thirdlongitudinal section 36C in a manner to form approximately 90 degree bend at the secondlongitudinal score line 34B thereby causing the first and secondlongitudinal edges longitudinal edges longitudinal edges square steel pipe 50. The method can include smoothing the weld surface 40. -
FIGS. 2A and 2B provide exemplary methods for formingrectangular steel tube 150 showing width variations, wherein the method includes the following steps. Step one is providing a generally square or rectangularplanar steel plate 120 having a predetermined thickness, afront surface 122 and aback surface 124, a firstlongitudinal edge 126 and a secondlongitudinal edge 128, and a firsttransverse edge 130 and a secondtransverse edge 132. Step two includes scoring a plurality of lines 134 longitudinally across theback surface 124, wherein a firstlongitudinal score line 134A is a first predetermined length X from the firstlongitudinal edge 126 defining firstlongitudinal section 136A, a secondlongitudinal score line 134A adjacent and parallel the firstlongitudinal score line 134A is a second predetermined length Y therefrom defining secondlongitudinal section 136B, a thirdlongitudinal score line 134C adjacent and parallel the secondlongitudinal score line 134B is a second predetermined length 2X therefrom defining thirdlongitudinal section 136C, and a fourthlongitudinal score line 134D adjacent and parallel the thirdlongitudinal score line 134C is the predetermined length Y therefrom defining fourthlongitudinal section 136D and the fourthlongitudinal score line 134D is the predetermined length X from the secondlongitudinal edge 128 defining fifthlongitudinal section 136E. Step 3 includes applying sufficient forces on the firstlongitudinal section 136A and the secondlongitudinal section 136B in a manner to form an approximately 90 degree bend at the first longitudinal score line and applying sufficient forces on the fifthlongitudinal section 136E and the fourthlongitudinal section 136D in a manner to form an approximately 90 degree bend at the fourthlongitudinal score line 134D, and further includes applying sufficient forces on the secondlongitudinal section 136B and the thirdlongitudinal section 136C in a manner to form approximately 90 degree bend at the secondlongitudinal score line 134B and applying sufficient forces on the thirdlongitudinal section 136C and the fourthlongitudinal section 136D in a manner to form approximately 90 degree bend at the thirdlongitudinal score line 134C thereby causing the first and secondlongitudinal edges cams longitudinal edges longitudinal edges rectangular steel pipe 150. The method can include smoothing the weld surface 140. - The method can provide score lines by way of stamping
tool 12 having tool dietool face 14 to provide the score lines and optionally other desired features in thepipe die face 14 is configured to score all said scoring lines at once and can be removable to provide such features as required. - The stamping process for making the
pip pipe - The invention provides for manufacture of any metal square or rectangular parts. This invention allows steel tubular parts to be manufactured with more detail, less cost and processes, consistent quality, more options for steel types, and more options for sizes of tubing. It minimizes costs and operations for making steel rectangular and square products and assemblies. It allows the ability to minimize the amount of parts to make a product or assembly. It allows the use of different steel types and sizes of shapes.
- Prior steel square or rectangular shaped tubular parts and products typically made with rolling mills which require pre and post operations for adding additional shapes and holes. Only specific sizes and shapes can be purchased typically. The instant invention solves this problem and provides for more options for sizes and shapes and openings to be formed at reduced cost.
- Further, in the process of roll milling steel tubular shapes, the metal is stretched and compressed requiring tolerances on the finished product to be increased. The instant invention solves this problem and minimizes the stresses and distortion on the material and makes for a more accurate product.
- It is to be understood that numerous additions, modifications, and derivations may be made to the present invention which fall within the intended scope of the above description and the claims appended hereto should be afforded the scope of such additions, modifications, and derivations. The configuration and construction materials used in connection with the invention may be modified or changed so long as the intended functionality is neither degraded nor destroyed. There has therefore been shown and described a method of making square and rectangular steel parts which accomplishes at least all of its intended objectives.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/621,066 US20170361368A1 (en) | 2016-06-16 | 2017-06-13 | Stamped and welded process for making steel rectangular or square tubular parts and parts therefrom |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662351121P | 2016-06-16 | 2016-06-16 | |
US15/621,066 US20170361368A1 (en) | 2016-06-16 | 2017-06-13 | Stamped and welded process for making steel rectangular or square tubular parts and parts therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
US20170361368A1 true US20170361368A1 (en) | 2017-12-21 |
Family
ID=60660678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/621,066 Abandoned US20170361368A1 (en) | 2016-06-16 | 2017-06-13 | Stamped and welded process for making steel rectangular or square tubular parts and parts therefrom |
Country Status (1)
Country | Link |
---|---|
US (1) | US20170361368A1 (en) |
-
2017
- 2017-06-13 US US15/621,066 patent/US20170361368A1/en not_active Abandoned
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101996155B1 (en) | Method for manufacturing molded article, mold, and tubular molded article | |
JP2009525184A (en) | Precision punching method and apparatus for a member in a single-stage facility having sharp edges and reduced dripping | |
EP0133705B1 (en) | Method of manufacturing metal pipe with longitudinally differentiated wall thickness | |
US6931906B2 (en) | Method and apparatus for cold forging a trailer hitch receiving housing | |
JP2005297064A (en) | Method for making profile with varying cross-section in longitudinal direction | |
US8176763B2 (en) | Steering rack | |
JP2005324255A (en) | Method for manufacturing round steel tube | |
US20180021829A1 (en) | Formed metal item including tubular part with slit, method for producing the same, and producing device and die assembly used in method for producing the same | |
JP2007203342A (en) | Method for manufacturing cylindrical shaft | |
DE102015105865A1 (en) | A method of forming a vehicle body structure from a pre-welded blank assembly | |
CN103084427A (en) | Manufacturing method of hardenability steel tube | |
US20170361368A1 (en) | Stamped and welded process for making steel rectangular or square tubular parts and parts therefrom | |
US20170320125A1 (en) | Method and device for forging a workpiece in bar form | |
JPS6116532B2 (en) | ||
RU2486981C1 (en) | Production of large-diameter welded tubes | |
JPH091234A (en) | Production of uo steel pipe | |
EP3778050B1 (en) | Method and device for bending edge of steel plate, and steel pipe manufacturing method and equipment | |
WO2012028632A1 (en) | Forming shoulder and method for producing the same | |
JPH11226635A (en) | Method and device for producing tube of polygonal cross section and closed state | |
RU2087226C1 (en) | Method of making straight-seam electrically welded large diameter tubes for transporting abrasive loose materials and pulps and apparatus for performing the same | |
RU2057603C1 (en) | Method of making straight-seam electrically welded large-diameter tubes | |
RU2763696C1 (en) | Method for manufacturing longitudinal electric-welded pipes | |
CN115178977B (en) | Taper sleeve locking reinforcing bar joint production process and production line thereof | |
PL238381B1 (en) | Method of rolling the edges of thick welded sheet-metal | |
CN106694700A (en) | Machining die for arc-shaped workpiece and machining method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JIREH METAL PRODUCTS, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOHNSON, DOUGLAS MICHAEL;REEL/FRAME:042689/0638 Effective date: 20170606 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |