Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
  • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
  • B23K35/24—Selection of soldering or welding materials proper
  • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
  • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
  • B23K35/24—Selection of soldering or welding materials proper
  • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
  • B23K35/3053—Fe as the principal constituent
  • B23K35/308—Fe as the principal constituent with Cr as next major constituent
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C38/00—Ferrous alloys, e.g. steel alloys
  • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
  • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/922—Static electricity metal bleed-off metallic stock
  • Y10S428/9335—Product by special process
  • Y10S428/939—Molten or fused coating
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12639—Adjacent, identical composition, components
  • Y10T428/12646—Group VIII or IB metal-base
  • Y10T428/12653—Fe, containing 0.01-1.7% carbon [i.e., steel]

Definitions

• the invention is a method of welding and a Table A welded joint having new and useful properties.
• Ferritic steels which contain about 16% to about 30% chromium and up to about 0.5% carbon are relatively hard in all conditions of heat treatment, are rather brittle when slowly cooled from elevated temperatures, and can be fully annealed only by holding at elevated temperatures for several hours and by subsequent rapid cooling. These higher chromium steels may be made softer and capable of more rapid annealing by the addition of at least about eight times, but not over 20 thirty times, as much columbium as carbon.
• sten is required to secure substantial benefits, g; 8158 i 1; 28 H5 H8 fig. 3,3. and more than about 2.5% of this element de- 45 stroys the toughness of the steel.
• the preferred .weld did not mack 0 bend tungsten content is between about 1% and about 1.5%.
• molybdenum is substituted for tungsten n mventlon may be ppl e t0 steels cont Should not exceed 2% taming from about 2% to about 30% chromium
• the weld filler material should have a columbium content at least eight times as great as the carbon content but not more than ten times the carbon content plus 1.5%. Preferably, the excess of columbium over ten times the carbon does not exceed about 0.75%.
• a strong and ductile welded joint comprising adjacent edges of at least two body portions and weld filler material between and uniting said adjacent edges, said body portions and filler material being composed of ferritic steel containing 2% to 30% chromium and up to 0.5% carbon, and said filler material containing substantially no unstable carbides which can be dissolved and reprecipitated in said material and containing columbium in an amount at least abouteight times, and not over about 1.5% plus ten times, the carbon content of said material,
• a strong and ductile welded joint comprising adjacent edges of at least two body portions and weld filler material between and uniting said adjacent edges, said body portions and filler material being composed of ferritic steel containing 4% to 20% chromium and up to 0.3% carbon, and said filler material containing substantially no unstable carbides which can be dissolved and reprecipitated in said material and containing columbium in an amount at least about eight times, and not over about 0.75% plus ten times, the carbon content of said material, and about 0.5% to 1.5% of at least one metal of the group consisting of molybdenum and tungsten, remainder iron.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Nonmetallic Welding Materials (AREA)
• Arc Welding In General (AREA)
• Butt Welding And Welding Of Specific Article (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (1)

Family

ID=21825234

Family Applications (1)

Country Status (5)

Cited By (7)

• 1935
  • 1935-06-06 US US25304A patent/US2113937A/en not_active Expired - Lifetime
• 1936
  • 1936-05-14 FR FR806386D patent/FR806386A/fr not_active Expired
  • 1936-05-15 DE DEE48347D patent/DE681719C/de not_active Expired
  • 1936-05-22 AT AT153170D patent/AT153170B/de active
  • 1936-05-29 GB GB15171/36A patent/GB475896A/en not_active Expired

Also Published As

Similar Documents