US2145756A - Metallic blast material - Google Patents

Metallic blast material Download PDF

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Publication number
US2145756A
US2145756A US100386A US10038636A US2145756A US 2145756 A US2145756 A US 2145756A US 100386 A US100386 A US 100386A US 10038636 A US10038636 A US 10038636A US 2145756 A US2145756 A US 2145756A
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United States
Prior art keywords
alloy
nickel
vanadium
molybdenum
blast material
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Expired - Lifetime
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US100386A
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John F Ervin
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts

Definitions

  • the invention relates to such metal abrasive materials as are used in the blast cleaning of iron, other castings, steel, stone, enamel-ware or other objects where the blast material is thrown by air or steam pressure or by mechanical vforce against them or used as an abrasive medium for sawing, cutting or polishing stone or other materials.
  • metal abrasives are prin-' cipally iron containing over 1% in carbon and.
  • Metal abrasives are now produced, that are principally iron with an approximate analysis of carbon 2.50%; manganese .50%; silicon 1.5%;
  • the life of an abrasive used in blasting is due to the resistance to breaking down under impact due to the high velocity of the abrasive when it strikes the object to be cleaned.
  • the life is also governed by the resistance to-wear or abrasion.
  • the power of resistance to failure by crushing of a blast material to a definite degree of fineness is greatly increased by the addition of 30. molybdenum and nickel in the ratio oil to 5; i. e.
  • An abrasive material comprising discrete particles of an alloy which is characterized by a 35 high-impact and abrasion resistance, such particles consisting of effective amounts and up to 5% of chromium; effective amounts and up to 5% of nickel; effective amounts and up to 1.0% of molybdenum; effective amounts and up to .l% 0 of vanadium; substantially 1% of carbon, the
  • the alloy consisting of iron with small amounts of impurities, such as manganese, silicon and phosphorus, in insuilicient quantity to alter the characteristics of the alloy; the alloy being further characterized in that the 5 vanadium content is adjusted to substantially one-fiftieth of the chromium content.
  • An abrasive material comprising discrete particles of an alloy which is characterized by a high impact and abrasion resistance, such par- 10 ticles consisting of effective amounts and up to 5% of chromium; eflective amounts and up to 5% of nickel; effective amounts and up to 1.0% of molybdenum; effective amounts and up to .l% of vanadium; substantially 1% of carbon, the i5 remainder of the alloy consisting of iron with small amounts of impurities, such as manganese, silicon and phosphorus, in insuflicient quantity to alter the characteristics of the alloy; the alloy being further characterized in that the 20 molybdenum content is adjusted to substantially one-fifth of the nickel-content.
  • An abrasive material comprising discrete particles of an alloy which is characterized by a high impact and abrasion/resistance, such par- 25 ticles consisting of eiiective amounts and up to 5% of chromium; effective amounts and up to 5% oi nickel; etlective amounts and up to 1.0% of molybdenum; effective amounts and up to .l% of vanadium; substantially 1% of carbon, the remainder oi the alloy consisting 01' iron with small amounts of impurities, such as manganese, silicon and phosphorus.
  • the alloy being further characterized in that the vanadium content is adjusted to substantially one-fiftieth of the chromium content and the molybdenum content is adjusted to substantially one-fifth of the nickel content.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Patented Jan. 31, 1939 PATENT OFFICE 2,145,150 7 nmramc nus-r mum.
John F. Ervin, Ann nun.
No Drawing. Appllcation'soptember 11, 1936,
Serial No. 100,388
3 Claims. (01. si-aso) The invention relates to such metal abrasive materials as are used in the blast cleaning of iron, other castings, steel, stone, enamel-ware or other objects where the blast material is thrown by air or steam pressure or by mechanical vforce against them or used as an abrasive medium for sawing, cutting or polishing stone or other materials. Such metal abrasives are prin-' cipally iron containing over 1% in carbon and.
.00% to 5.% chromium and up to 5.% nickel and up to 3.5% molybdenum and up to .5% vanadium.
Metal abrasives are now produced, that are principally iron with an approximate analysis of carbon 2.50%; manganese .50%; silicon 1.5%;
sulphur .l0%; phosphorus 30% balance mostly iron.
The life of an abrasive used in blasting is due to the resistance to breaking down under impact due to the high velocity of the abrasive when it strikes the object to be cleaned. The life is also governed by the resistance to-wear or abrasion.
' The power of resistance to failure by impact of a blast material is increased to a great extent by the addition of vanadium and chromium in the ratio of approximately .1 to 50, i. e. 1 part of vanadium to 50 parts otchromium.
The power of resistance to failure by crushing of a blast material to a definite degree of fineness is greatly increased by the addition of 30. molybdenum and nickel in the ratio oil to 5; i. e.
one part of molybdenum to 5 parts of nickel.
' I claim:
1. An abrasive material comprising discrete particles of an alloy which is characterized by a 35 high-impact and abrasion resistance, such particles consisting of effective amounts and up to 5% of chromium; effective amounts and up to 5% of nickel; effective amounts and up to 1.0% of molybdenum; effective amounts and up to .l% 0 of vanadium; substantially 1% of carbon, the
remainder of the alloy consisting of iron with small amounts of impurities, such as manganese, silicon and phosphorus, in insuilicient quantity to alter the characteristics of the alloy; the alloy being further characterized in that the 5 vanadium content is adjusted to substantially one-fiftieth of the chromium content.
2. An abrasive material comprising discrete particles of an alloy which is characterized by a high impact and abrasion resistance, such par- 10 ticles consisting of effective amounts and up to 5% of chromium; eflective amounts and up to 5% of nickel; effective amounts and up to 1.0% of molybdenum; effective amounts and up to .l% of vanadium; substantially 1% of carbon, the i5 remainder of the alloy consisting of iron with small amounts of impurities, such as manganese, silicon and phosphorus, in insuflicient quantity to alter the characteristics of the alloy; the alloy being further characterized in that the 20 molybdenum content is adjusted to substantially one-fifth of the nickel-content. J I
3. An abrasive material comprising discrete particles of an alloy which is characterized by a high impact and abrasion/resistance, such par- 25 ticles consisting of eiiective amounts and up to 5% of chromium; effective amounts and up to 5% oi nickel; etlective amounts and up to 1.0% of molybdenum; effective amounts and up to .l% of vanadium; substantially 1% of carbon, the remainder oi the alloy consisting 01' iron with small amounts of impurities, such as manganese, silicon and phosphorus. in insuflicient quantity to alter the characteristics of the alloy; the alloy being further characterized in that the vanadium content is adjusted to substantially one-fiftieth of the chromium content and the molybdenum content is adjusted to substantially one-fifth of the nickel content.
JOHN F. ERVIN. 4o
US100386A 1936-09-11 1936-09-11 Metallic blast material Expired - Lifetime US2145756A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611690A (en) * 1946-02-16 1952-09-23 Ind Metal Abrasive Company Ball-peening and cleaning shot
US2666697A (en) * 1951-01-18 1954-01-19 Louise J Eder Ferrous alloys
US2670281A (en) * 1949-10-14 1954-02-23 American Wheelabrator & Equipm Steel shot for blast cleaning, blast peening, and the like
US3519499A (en) * 1966-04-19 1970-07-07 Finkl & Sons Co Heat treated forging die having a low alloy content
US3655366A (en) * 1969-10-13 1972-04-11 Int Nickel Co Low alloy structural steel
US4488608A (en) * 1981-09-11 1984-12-18 Berchem & Schaberg Gmbh Rotary stone-cutting head with hardened teeth inserts
DE3515198A1 (en) * 1984-04-28 1985-10-31 Akebono Brake Industry Co., Ltd., Tokio/Tokyo Iron-containing brake disc material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611690A (en) * 1946-02-16 1952-09-23 Ind Metal Abrasive Company Ball-peening and cleaning shot
US2670281A (en) * 1949-10-14 1954-02-23 American Wheelabrator & Equipm Steel shot for blast cleaning, blast peening, and the like
US2666697A (en) * 1951-01-18 1954-01-19 Louise J Eder Ferrous alloys
US3519499A (en) * 1966-04-19 1970-07-07 Finkl & Sons Co Heat treated forging die having a low alloy content
US3655366A (en) * 1969-10-13 1972-04-11 Int Nickel Co Low alloy structural steel
US4488608A (en) * 1981-09-11 1984-12-18 Berchem & Schaberg Gmbh Rotary stone-cutting head with hardened teeth inserts
DE3515198A1 (en) * 1984-04-28 1985-10-31 Akebono Brake Industry Co., Ltd., Tokio/Tokyo Iron-containing brake disc material

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