CN102513723B

CN102513723B - Welding powder

Info

Publication number: CN102513723B
Application number: CN201110361730.0A
Authority: CN
Inventors: 周森; 周定杨; 蔡俊峰
Original assignee: SICHUAN NON-FERROUS JINYUAN POWDER METALLURGY MATERIAL Co Ltd
Current assignee: Sichuan Non-ferrous Jinyuan Powder Metallurgy Material Co., Ltd.
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2014-07-16
Anticipated expiration: 2031-11-16
Also published as: CN102513723A

Abstract

The invention discloses welding powder. The alloy of the welding powder comprise the components according to weight percentage: 0.5-1% of B, 1.5-2% of Si, 3-7% of Fe, 8-12% of Cu, 0.1-1% of Co, less than 0.1% of impurities and the balance of Ni. The welding powder is prepared by preparing raw materials, preparing the raw materials according to percentage, smelting, atomizing, cooling, drying, screening, welding and detecting, packaging, warehousing and the like. The welding powder can also be prepared by regulating the raw materials according to a feed back result of detecting a welding layer. According to the welding powder disclosed by the invention, the hardness of the welding layer is less than 200 HB; and the hardness of the welding layer is equal to the hardness of casts. The welding powder disclosed by the invention is widely applied for fixing various casts.

Description

A kind of welding powder

Technical field

The present invention relates to welding field, relate in particular to a kind of soft welding powder.

Background technology

In casting industry, casting flaw (cast(ing) surface or the inner pore occurring, sand holes, crackle, pit etc.) can not be avoided completely, and conventional reparation has: welding rod, foundry work glue, surfacing etc.Much higher hard on welding rod postwelding solder joint, there is stress inside, easily cracks, and the heat treatment that generally also needs to anneal just can meet processing request.And because of welding condition restriction, the inner secondary defects such as pore, slag inclusion that easily produce; Foundry work glue is repaired extensive foundry goods, and bond strength hardness is very low; Surfacing has the distinguishing features such as equipment is simple, small investment, instant effect, easy to operate, easy grasp, coating quality is stable, machining property is good, production cost is low, economic benefit is high.The welding powder that surfacing is used, its alloy proportion requires rationally, just can have good surfacing performance and the hardness that approaches base material.But in prior art, common composition B:0.8-1.2%, Si:1.5-2%, Fe:1-5%, the surplus of alloy welding powder that surfacing is used is Ni.But layer hardness is generally 220-250HB, after foundry goods reparation, add man-hour hardness higher.

Summary of the invention

In view of this, the object of this invention is to provide a kind of soft welding powder.

Above-mentioned purpose realizes by following proposal:

A welding powder, is characterized in that, the percentage by weight of the alloy of this welding powder consists of: B:0.5-1%, Si:1.5-2%, Fe:3-7%, Cu:8-12%, Co:0.1-1%, be no more than 0.1% impurity, surplus is Ni.

Beneficial effect of the present invention: the low < 200HB of layer hardness, the hardness of hardness and foundry goods is suitable, is widely used in the reparation of all kinds of foundry goods.

Accompanying drawing explanation

Fig. 1 is the production method flow chart of welding powder of the present invention.

The specific embodiment

Below in conjunction with example, the present invention is further described as follows.

The percentage by weight of the alloy of welding powder of the present invention consists of: B:0.5-1%, Si:1.5-2%, Fe:3-7%, Cu:8-12%, Co:< 1%, surplus is Ni.

Referring to Fig. 1, its production process comprises preparation raw material, preparation raw material in proportion, and melting, atomization, cooling, dry, sub-sieve, weld and detects, packs, and puts in storage etc.The feedback result that can also detect layer is adjusted raw material preparation.

Embodiment 1

With electronic scale (sensibility reciprocal 1g), take the FeB1.5 kg containing B 20%, Si 0.9Kg containing Si >=99%, Cu5Kg containing Cu >=99.5%, Co0.2Kg containing Co >=99%, Ni 42.4Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.6%, contains Fe 3.3%, contains Cu 10%, contains Si 1.8%, containing Co 0.4%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1400 degree, and gas pressure is shown as 1.2 MPas, layer hardness 180HB after surfacing, and tensile strength is 25.9KN.

Embodiment 2

With electronic scale (sensibility reciprocal 1g), take the FeB 1.25kg containing B 20%, Si 0.75Kg containing Si >=99%, Cu 4Kg containing Cu >=99.5%, Co0.1Kg containing Co >=99%, Ni 43.9Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.5%, contains Fe 3.0%, containing Cu 8%, contains Si 1.5%, containing Co 0.2%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1410 degree, and gas pressure is shown as 1.2 MPas, layer hardness 160HB after surfacing, and tensile strength is 25.2KN.

Embodiment 3

With electronic scale (sensibility reciprocal 1g), take the FeB 1.5kg containing B 20%, Si 0.75Kg containing Si >=99%, Cu 5Kg containing Cu >=99.5%, Co 0.1Kg containing Co >=99%, Ni 42.65Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.6%, contains Fe 3.4%, contains Cu 10%, contains Si 1.5%, containing Co 0.2%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1420 degree, and gas pressure is shown as 1.2 MPas, layer hardness 175HB after surfacing, and tensile strength is 25.8KN.

Embodiment 4

With electronic scale (sensibility reciprocal 1g), take the FeB 1.5kg containing B20%, Si 0.9Kg containing Si >=99%, Cu 5Kg containing Cu >=99.5%, Co 0.1Kg containing Co >=99%, Ni 42.5Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.6%, contains Fe 3.4%, contains Cu 10%, contains Si 1.8%, containing Co 0.2%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1430 degree, and gas pressure is shown as 1.18 MPas, layer hardness 182HB after surfacing, and tensile strength is 26.1KN.

Embodiment 5

With electronic scale (sensibility reciprocal 1g), take the FeB 1.5kg containing B 20%, Si 0.9Kg containing Si >=99%, Cu 6Kg containing Cu >=99.5%, Co 0.1Kg containing Co >=99%, Ni 41.5Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.6%, contains Fe 3.4%, contains Cu 12%, contains Si 1.8%, containing Co 0.2%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1400 degree, and gas pressure is shown as 1.18 MPas, layer hardness 172HB after surfacing, and tensile strength is 25.7KN.

Embodiment 6

With electronic scale (sensibility reciprocal 1g), take the FeB 1.5kg containing B 20%, Si 1.0Kg containing Si >=99%, Cu 5Kg containing Cu >=99.5%, Co 0.1Kg containing Co >=99%, Ni 42.4Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.6%, contains Fe 3.4%, contains Cu 10%, contains Si 2.0%, containing Co 0.2%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1400 degree, and gas pressure is shown as 1.18 MPas, layer hardness 185HB after surfacing, and tensile strength is 26.5KN.

Embodiment 7

With electronic scale (sensibility reciprocal 1g), take the FeB2.5kg containing B 20%, Si 1.0Kg containing Si >=99%, Cu 6Kg containing Cu >=99.5%, Co 0.5Kg containing Co >=99%, Ni 40Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 1.0%, contains Fe 6.3%, contains Cu 12%, contains Si 2.0%, containing Co 0.9%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1450 degree, and gas pressure is shown as 1.20 MPas, layer hardness 194HB after surfacing, and tensile strength is 28.8KN.

Embodiment 8

With electronic scale (sensibility reciprocal 1g), take the FeB 1.5kg containing B 20%, Si 1.0Kg containing Si >=99%, Cu 5Kg containing Cu >=99.5%, Co 0.5Kg containing Co >=99%, Ni 42Kg containing Ni >=99%, by melting, in the intermediate frequency furnace of 50Kg, heat fused, contains B 0.6%, contains Fe 3.7%, contains Cu 10%, contains Si 2.0%, containing Co 1.0%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1430 degree, and gas pressure is shown as 1.20 MPas, layer hardness 184HB after surfacing, and tensile strength is 27.8KN.

Embodiment 9

With electronic scale (sensibility reciprocal 1g), take the FeB2.5kg containing B 20%, Si 1.0Kg containing Si >=99%, Cu 6Kg containing Cu >=99.5%, pure iron 0.5 Kg, containing the Co 0.05Kg of Co >=99%, containing the Ni 39.95Kg of Ni >=99%, by melting in the intermediate frequency furnace of 50Kg, heat fused, contains B 1.0%, contains Fe 7.0%, contains Cu 12%, contains Si 2.0%, containing Co 0.1%, surplus, is Ni and is no more than other impurity of 0.1% through chemical analysis gained alloy.The temperature that records atomization with temperature measurer is 1450 degree, and gas pressure is shown as 1.20 MPas, layer hardness 194HB after surfacing, and tensile strength is 28.8KN.

Claims

1. a welding powder, is characterized in that, the percentage by weight of the alloy of this welding powder consists of: B:0.5-1%, Si:1.5-2%, Fe:3-7%, Cu:10-12%, Co:0.1-1%, be no more than 0.1% impurity, surplus is Ni; And described welding powder is for surfacing, and layer hardness is less than 200HB after surfacing.