US3719790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for forming a weld-surfaced alloyed steel layer of steel
Assignee: Gebrueder Boehler and Co AG
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Filing: 1968-06-21
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Granted: 1973-03-06
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Expires: 1988-06-21
Abstract
Abstract This invention relates to articles having a wearing surface affixed thereto by means of welding. The invention is particularly applicable to workpieces and tools, such as machine knives. In particular, the invention discloses novel compositions and methods for cladding or surfacing a metal article by means of a so-called band or flat strip electrode thereby producing a very hard wearing layer of allowed steel on said article. The use of flat strip electrodes results in a flat and uniform penetration and, consequently, in a slight and uniform mixing with the base material of the article.
Inventors
- 👤 E Plockinger
- 👤 H Ornig
- 👤 A Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:25
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3046; B23K35/306; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12965
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
183 words
A process for producing a composite article having a base of tough steel, said article having non-working surfaces and working surfaces, comprising the steps of submerged arc weld-surfacing said working surfaces by means of a flat strip electrode having a width in the range of 5 mm to 120 mm and a thickness in the range of 0.3 mm to 3.2 mm; said flat strip electrode consists of the following composition: 2.0 to 1.7 percent carbon, 0.1 to 1.7 percent silicon, 0.3 to 2.0 percent manganese, 1.0 to 7.0 percent chromium, 0.1 to 12 percent molybdenum, 0.1 to 5.0 percent nickel, 0.1 to 6 percent vanadium, 0.5 to 10 percent cobalt, 0.5 to 0.4 percent copper, 0.2 to 0.3 percent nobium, balance iron with the usual impurities; said flat strip electrode used for weld-surfacing said working surfaces travels at a speed in the range of 7-30 cm per minute; the current density used in said submerged arc welding technique ranges from 10 to 50 amperes per mm; and the voltage used in said submerged arc welding technique ranges from 22 - 40 volts.
Claim 2
Dependent Claim
183 words
A process for producing a composite article having a base of tough steel, said article having non-working surfaces and working surfaces, comprising the steps of submerged arc weld-surfacing said working surfaces by means of a flat strip electrode having a width in the range of 5 mm to 120 mm and a thickness in the range of 0.3 mm to 3.2 mm; said flat strip electrode consists of the following composition: 2.0 to 1.7 percent carbon, 0.1 to 1.7 percent silicon, 0.3 to 2.0 percent manganese, 1.0 to 7.0 percent chromium, 0.1 to 12 percent molybdenum, 0.1 to 5.0 percent nickel, 0.1 to 6 percent vanadium, 0.5 to 10 percent cobalt, 0.5 to 0.4 percent copper, 0.2 to 0.3 percent nobium, balance iron with the usual impurities; said flat strip electrode used for weld-surfacing said working surfaces travels at a speed in the range of 7-30 cm per minute; the current density used in said submerged arc welding technique ranges from 10 to 50 amperes per mm; and the voltage used in said submerged arc welding technique ranges from 22 - 40 volts.
Claim 3
Dependent Claim
158 words
A process for producing a composite article having a base of tough steel, said article having non-working surfaces and working surfaces, comprising the steps of submerged arc weld-surfacing said working surfaces by means of a flat strip electrode having a width in the range of 5 mm to 120 mm and a thickness in the range of 0.3 mm to 3.2 mm; said flat strip electrode consists of the following composition: 0.1 - 1.1 percent carbon, 0.2 - 4.0 percent silicon, 0.3-0.8 percent manganese, 12.0-21.0 percent chromium, 0.0-3.0 percent molybdenum, 0.1-2.0 percent nickel, 0.0-0.3 percent vanadium, balance iron with the usual impurities; said flat strip electrode used for weld-surfacing said working surfaces travels at a speed in the range of 7-30 cm per minute; the current density used in said submerged arc welding technique ranges from 10 to 50 amperes per mm; and the voltage used in said submerged arc welding technique ranges from 22 - 40 volts.
Claim 4
Dependent Claim
158 words
A process for producing a composite article having a base of tough steel, said article having non-working surfaces and working surfaces, comprising the steps of submerged arc weld-surfacing said working surfaces by means of a flat strip electrode having a width in the range of 5 mm to 120 mm and a thickness in the range of 0.3 mm to 3.2 mm; said flat strip electrode consists of the following composition: 0.1 - 1.1 percent carbon, 0.2 - 4.0 percent silicon, 0.3-0.8 percent manganese, 12.0-21.0 percent chromium, 0.0-3.0 percent molybdenum, 0.1-2.0 percent nickel, 0.0-0.3 percent vanadium, balance iron with the usual impurities; said flat strip electrode used for weld-surfacing said working surfaces travels at a speed in the range of 7-30 cm per minute; the current density used in said submerged arc welding technique ranges from 10 to 50 amperes per mm; and the voltage used in said submerged arc welding technique ranges from 22 - 40 volts.
Claim 5
Dependent Claim
153 words
A process for producing a composite article having a base of tough steel, said article having non-working surfaces and working surfaces, comprising the steps of submerged arc weld-surfacing said working surfaces by means of a flat strip electrode having a width in the range of 5 mm to 120 mm and a thickness in the range of 0.3 mm to 3.2 mm; said flat strip electrode consists of the following composition: 1.0-1.5 percent carbon, 0.3-0.6 percent silicon, 6.0-18.0 percent manganese, 0.1-2.0 percent chromium, 0.1-2.0 percent molybdenum, 0.1-6.0 percent nickel, balance iron with the usual impurities; said flat strip electrode used for weld-surfacing said working surfaces travels at a speed in the range of 7 - 30 cm per minute; the current density used in said submerged arc welding technique ranges from 10 to 50 amperes per mm; and the voltage used in said submerged arc welding technique ranges from 22 - 40 volts.
Claim 6
Dependent Claim
153 words
A process for producing a composite article having a base of tough steel, said article having non-working surfaces and working surfaces, comprising the steps of submerged arc weld-surfacing said working surfaces by means of a flat strip electrode having a width in the range of 5 mm to 120 mm and a thickness in the range of 0.3 mm to 3.2 mm; said flat strip electrode consists of the following composition: 1.0-1.5 percent carbon, 0.3-0.6 percent silicon, 6.0-18.0 percent manganese, 0.1-2.0 percent chromium, 0.1-2.0 percent molybdenum, 0.1-6.0 percent nickel, balance iron with the usual impurities; said flat strip electrode used for weld-surfacing said working surfaces travels at a speed in the range of 7 - 30 cm per minute; the current density used in said submerged arc welding technique ranges from 10 to 50 amperes per mm; and the voltage used in said submerged arc welding technique ranges from 22 - 40 volts.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |