CN108032000A

CN108032000A - A kind of kamash alloy MIG wldings

Info

Publication number: CN108032000A
Application number: CN201711292290.1A
Authority: CN
Inventors: 薛山; 周健; 张小立; 穆开洪
Original assignee: Suzhou Hufu New Material Technology Co Ltd
Current assignee: Suzhou Hufu New Material Technology Co Ltd
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2018-05-15

Abstract

The present invention provides a kind of kamash alloy MIG wldings, including tin, further includes each component of following percentage by weight：4~12% antimony, 0.1~0.5% aluminium, 0.6~1% nickel, 0.2~0.5% phosphorus；Using this kamash alloy, the problems such as reducing more splash easily occurred during wlding MIG welderings, face of weld bad order, while weld seam bond strength is high and reliable and stable, which is particularly suitable for base steel and/or the MIG on copper-based mother metal surface is welded.

Description

A kind of kamash alloy MIG wldings

Technical field

The present invention relates to a kind of wlding, in particular for the kamash alloy material of MIG welderings.

Background technology

Kamash alloy is the wear-resisting layer material for being widely used in low-speed heave-load sliding friction component.Traditional handicraft is by tinbase Babbit is cast, then nesting forms wearing layer with component friction part is fixed on.This method needs substantial amounts of follow-up Mechanical processing, spillage of material are big.In recent years, using overlaying method carry out kamash alloy wearing layer directly coat or local route repair Through as a kind of new bearing shell processing method, its main feature is that efficient, simple processing.

MIG welderings (melting pole gas shielded arc welding) are more efficient with respect to gas brazing and TIG welderings (weldering of non-melt pole gas shielded). What is more important, welding wire is as consumable electrode, and through welding property is good, and connector bond strength is high, therefore represents babbit built-up welding The latest development direction.However, the difficult point of MIG welderings is the stability control of electric arc, and bath temperature height, this can give welding Splash and face of weld quality brings certain influence, be the difficult point for carrying out babbit built-up welding with MIG welderings at present.

The content of the invention

In order to solve the above technical problems, the present invention provides a kind of kamash alloy wlding formula of built-up welding function admirable, subtract The problems such as lacking more splash easily occurred during wlding MIG welderings, face of weld bad order, while weld seam bond strength is high It is and reliable and stable.

To reach above-mentioned purpose, technical scheme is as follows：

A kind of welding material being used in base steel, the progress MIG welderings of copper-based mother metal surface, except metallic tin, the material are provided Material also contains each component of following percentage by weight：4~12% antimony (Sb), 0.1~0.5% aluminium (Al), 0.6~1% Nickel (Ni), 0.2~0.5% phosphorus (P).

The benefit of the present invention is embodied in following aspect：

1. the relatively traditional tin-base babbit of the kamash alloy of the present invention, eliminates copper (Cu), adds aluminium (Al).Copper exists Middle hard phase can be formed in casting babbit, plays the role of improving wearability.The present invention uses extremely a small amount of Al Element instead of Cu, finds that a variety of Fe-Al hard phases can be formed when base steel mother metal welds, can equally play raising wearability Effect.Meanwhile this material is also particularly suitable for the welding of copper-based mother metal especially with MIG welderings.It is found that cupric Pasteur closes Gold causes the copper content in weld seam excessive when copper-based mother metal welds, since the copper in mother metal is easy to dissolve in weld seam, Material fragility tendency increase, fatigue performance reduce, therefore without Cu and contain aluminium, solubility of the Cu in molten bath in this programme Decline, can significantly improve the brittleness and fatigue performance of overlay cladding.Al content influences the wearability of material very big.When Al contains When amount is less than 0.1%, rare Fe-Al hard phases in weld seam, the overlay cladding wearability that formation is welded on base steel mother metal substantially drops Low, the Al content of optimization is 0.21~0.25%, and it is more to form Fe-Al phase amounts at this time, and disperse is tiny, can improve material Wearability (see embodiment 2).When Al content is more than 0.5%, the Fe-Al of strip meets roughening, to the wearability of overlay cladding Play adverse effect.

2. present invention finds add Ni and P can effectively solve MIG weldering spattering problem, and splash reduction the reason for be The increase of molten drop viscosity.When Ni contents are 0.65~0.75%, while P content is 0.25~0.35%, the weld seam of acquisition flies Minimum is splashed, appearance uniform is smooth.Contrast is found, when Ni contents are solid-solution in weld seam substantially less than 0.5%, Ni elements, it is impossible to shape Into Ni-Sn compounds, also without P-compound is contained when P element content is less than 0.2%, weld seam splashes obvious at this time.When Ni contents are super When 1%, foring excessive compound causes the hardness of material higher.Ni is high-melting-point element, and adding Ni in tin can be with Form Ni-Sn high melting compounds.Equally, P can also be with Sn-P compounds.The presence of these compounds can increase MIG welderings The melting range and viscosity of molten drop, mobility when reducing kamash alloy MIG welderings, improves the stability during MIG weldering droplet transfers, so that It ensure that weldquality and appearance.Since P has antioxidation at the same time, surface has metallic luster without black oxide. When Ni contents are less than 0.65%, the effect of splashing control can be kept by improving P content；When Ni contents are higher than 0.75% When, it can moderately reduce P content control splashing effects.

Brief description of the drawings

Fig. 1 is the metallograph of Sn11Sb6Cu babbits/Fe cladding layers；

Fig. 2 is kamash alloy/Fe cladding layers of the embodiment of the present invention 1；

Fig. 3 is kamash alloy/Fe cladding layers of the embodiment of the present invention 2；

Fig. 4 is Sn11Sb6Cu babbits/Cu weld interfaces；

Fig. 5 is kamash alloy/Cu weld interfaces of this patent embodiment 1；

Fig. 6 is the dsc analysis curve of embodiment 3；

Fig. 7 is the dsc analysis curve of Sn-11Sb-0.25Al.

Embodiment

Below by specific embodiment, the present invention is described further.

Embodiment 1

A kind of to be used to carry out the welding material of MIG welderings on base steel, copper-based mother metal surface, the material contains following weight hundred Divide each component of ratio：11% antimony (Sb), 0.10% aluminium (Al), 0.70 nickel (Ni), 0.30% phosphorus (P), surplus is tin (Sn)。

Embodiment 2

A kind of to be used for built-up welding to obtain the welding material of babbit wearing layer, the material contains following percentage by weight Each component：11% antimony (Sb), 0.23% aluminium (Al), 0.70% nickel (Ni), 0.30% phosphorus (P), surplus is tin (Sn)。

Embodiment 3

A kind of to be used for built-up welding to obtain the welding material of babbit wearing layer, the material contains following percentage by weight Each component：11% antimony (Sb), 0.25% aluminium (Al), 0.65 nickel (Ni), 0.21% phosphorus (P), surplus are tin (Sn).

By the alloy of above-described embodiment 1,2 and routine Sn11Sb6Cu babbits respectively base steel mother metal surface into Row MIG is welded, and the metallograph of its cladding layer is as shown in Figs. 1-3；From figure 2 it can be seen that have begun to occur in microstructure of surface cladding layer Granular Al-Fe compounds；And in Fig. 3 (embodiment 2), in tissue, granular Al-Fe compounds increase, and have begun to A small amount of thick needlelike phase is formed, the babbit used in seam organization and Fig. 1 which obtains is closer.

The alloy of embodiment 1 and Sn11Sb6Cu babbits are subjected to MIG welderings on copper-based mother metal surface, its weld seam is put It is 1000 times big, the metallograph of Fig. 4-5 can be obtained, it can be seen that using the alloy of embodiment 1, multiple compounds in tissue Particle is all very different with babbit, tissue more fine uniform, weld seam transition zone smaller.

Embodiment 3 is subjected to dsc analysis tracing analysis (Fig. 6), it can be seen that exothermic peak occur in high-temperature region and illustrate material There is the generation of high-melting-point phase, improve the viscosity of material molten drop, splash beneficial to control MIG welderings；And by the Ni and P in embodiment 3 Remove, using only Sn-11Sb-0.25Al, second exothermic peak does not occur in its dsc analysis curve, it is seen that material melting range scope It is small.

The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.

Claims

1. a kind of kamash alloy MIG wldings, it is characterised in that including tin, further include each component of following percentage by weight：4~ 12% antimony, 0.1~0.5% aluminium, 0.6~1% nickel, 0.2~0.5% phosphorus.

2. kamash alloy MIG wldings according to claim 1, it is characterised in that the mass percentage of the aluminium is 0.21~0.25%.

3. kamash alloy MIG wldings according to claim 1 or 2, it is characterised in that the mass percentage of the nickel is 0.65~0.75%, and the mass percentage of phosphorus is 0.25~0.35%.

4. a kind of method that base steel and/or copper-based mother metal surface carry out MIG welderings, it is characterised in that usage right is required described in 1-3 Kamash alloy as wlding.