DE2033744B2 - USE OF A NICKEL ALLOY FOR THE PRODUCTION OF HARD WEAR RESISTANT AND CORROSION RESISTANT COATING LAYERS ON METALLIC OBJECTS - Google Patents

Description

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The invention relates to the use of a content-excellent flow properties in the on-nickel alloy for the production of hard, wear spraying or welding. Bor also sets the solid and corrosion-resistant, sprayed-on or melting point of the alloy, what with regard to welded-on coating layers on metallic a lowering of the spray-on or weld-on objects. 5 temperature is desirable. By adding

For the production of hard, wear-resistant boron, oxides continue to be formed.

Coating layers are metal alloys closed as a powder and the formation of borosilicates enables

or welding rods known, which light by spraying, which on the surface of the coating layers

or welding onto the surface in a more metallic way, thereby further admitting oxygen

Objects are applied. Prevent by adding iq and ensure a smooth surface of the coating

Form metal carbides to form such a metallic coating.

Alloys can reduce the hardness of the coating layers in terms of the ratio of chromium / molybdenum / silicon

are known to be improved. However, it is the corrosion resistance, especially against

Wear resistance of such coating layers does not contribute to plastics with molecular conversion

especially high. The binding alloy is in fact significantly improved at ^{temperatures of over 300 0 C,}

washed out over time, and the stored in them The hardness of a coating layer from the previous

Metal carbide grains are on the surface of the beaten nickel alloy is 67 R ₀ and he

Coating layer exposed. As a result, they call once so that the value of known contract materials is sufficient,

severe wear and tear on the parts with the metal carbide inclusions. It is

come into contact with the coating layer, and ao the nickel alloy to be used according to the invention

on the other hand, if they are no longer sufficiently more wear-resistant, because those formed in them

Find hold in the binding alloy, from which the coating carbides and borides are eutectically homogeneous

layer broken out. division in a y mixed crystal matrix.

Other known metallic spray powders have corrosion resistance and hardness of the invention

partly a better wear resistance, then according to spray powder are up to operating temperatures

but a lower hardness and insufficient hardness of about 600 ^° C. is available. . . ·

Corrosion resistance. Due to the aforementioned properties, it is suitable

The object of the present invention is to propose the proposed nickel alloy for the hermetallic material, which position of coating layers on metallic as a powder good on the surfaces of metallic objects that are in a corrosive atmosphere Spray on objects and have to be hard and wear-resistant as a welding rod, e.g. B. Plunging can be welded on, d. H. Is flowable, and a hard, and piston rods, in the processing of art wear-resistant and very corrosion-resistant coatings at higher temperatures. Due to the forms. high wear resistance to abrasive

According to the invention, the attack to be used according to the invention is suitable for solving this problem

for the aforementioned purpose a nickel alloy alloy also for purposes of the stoneware industry,

proposed that the nickel alloy to be used according to the invention can be made in the form of powder or sticks

1.5 to 3% carbon, are used and by flame or plasma

2 to 5% silicon, 40 spray or Piasmarc welding can be applied.

0 to 1% manganese, by a known thermal after-10 up to 30% chromium, treatment at 1050 to 1070 ° C can result from the

5 to 20% molybdenum, nickel alloy to be used according to the invention

3 to 10% cobalt, sprayed coating layer in the surface of the 3 to 15% tungsten, 45 coated object firmly bonded by diffusion

1 to 5% vanadium.
1.5 to 5% boron,

Remainder nickel _D ♦ ₊ "·· 1, ■

Claims (1)

Patent claims: consists. ₅ o From this range, a nickel alloy is preferred. 1. Use of a nickel alloy alloy with off 55 60 for use for the aforementioned purpose, in the form of powder or sticks for manufacture beaten. harder, more wear-resistant and more corrosion-resistant. The nickel-sprayed or welded-on coating alloy to be used according to the invention has, due to the high boron and silicon layers on metallic objects. 2.0 until 2.5% Carbon, 3.7 until 4.0% 'Silicon, 0 until 0.15% Manganese, 16 until 18% Chrome, 14th until 15% Molybdenum, 6.5 until 7% Cobalt, 5 until 7% Tungsten, 1.8 until 2.2% Vanadium, 3.5 until 4% Boron, rest nickel 1, 5 to 3% Carbon, Chrome, 2 until 5% Silicon, Molybdenum, 0 until 1% manganese, Cobalt, 10 until 30% Tungsten, 5 until 20% Vanadium, 3 until 10% Boron, 3 until 15% Nickel, 1 until 5% 1, 5 to 5% Rest: 3 4 2. Use of a nickel alloy containing 14 to 15% molybdenum, Composition according to claim 1, consisting of 6.5 to 7% cobalt, 5 to 7% tungsten, 2.0 to 2.5% carbon, 1.8 to 2.2% vanadium, 3.7 to 4.0% silicon, 5 3.5 to 4% boron, 0 to 0.15% manganese, balance nickel, 16 to 18% chromium, for the purpose mentioned in claim 1.