CN101792874A - Easy-cutting antimony-zinc alloy and preparation method of bar thereof - Google Patents
Easy-cutting antimony-zinc alloy and preparation method of bar thereof Download PDFInfo
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- CN101792874A CN101792874A CN201010157397A CN201010157397A CN101792874A CN 101792874 A CN101792874 A CN 101792874A CN 201010157397 A CN201010157397 A CN 201010157397A CN 201010157397 A CN201010157397 A CN 201010157397A CN 101792874 A CN101792874 A CN 101792874A
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Abstract
The invention relates to easy-cutting antimony-zinc alloy and a preparation method of a bar thereof. The easy-cutting antimony-zinc alloy is characterized by comprising the following components by weight percent: 0.5-15% of aluminum, 0.5-8% of antimony, the balance of zinc and unavoidable impurities. The bar can be prepared into an alloy casting blank by die casting, semi-continuous casting or full-continuous methods, and then the alloy casting blank is heat processed into a blank material at a constant temperature of 150-380 DEG C, and finally, the obtained blank material is drawn by cold processing or straight-line-stretched to obtain the easy-cutting antimony-zinc alloy bar. The cutting performance and efficiency of the antimony-zinc alloy bar are obviously higher than die casting zinc alloy and close to a lead brass bar, the antimony-zinc alloy bar has the characteristics of no lead and cadmium, good environment-friendly properties, no magnetism, no sparking discharge and the like, easy processing, easy electroplating, and moderate mechanical properties, can be used as a substitute for a lead brass alloy bar, can be used as a basic raw material processed by meter lathes, automatic lathes and numerical control lathes and as a substitute for the easy-cutting copper alloy bar and die-casting zinc alloy.
Description
Technical field
The present invention relates to the preparation method of a kind of antimony-zinc alloy and bar thereof.
Background technology
The non-ferrous metal bar is the basic raw material of various metallic elements.By means such as instrument lathe, self-acting lathe, digital controlled lathes the non-ferrous metal bar is carried out machining, can obtain the various size of people's needs and the component of shape.The quality of alloy cutting ability is to the speed of machining, and surface smoothness, tolerance of dimension etc. has important effect.
Iron alloy, copper alloy, aluminium alloy etc. all have the free cutting alloy bar being widely used in different technical fields.Because zinc alloy has good environmental protection, pollution-free, fusing point is low, good processability, and cost is lower, save energy, good characteristic such as can not generate electromagnetic waves can be widely used in the manufacturing component in some fields.
Because the fusing point of zinc alloy is low, good fluidity, the product of most zinc alloy adopts extrusion process, by the direct machine-shaping of liquid state, makes the different shape complex devices.The main prescription of zinc die casting alloys is elementary composition by zinc-copper-three kinds in aluminium at present, though good formability is arranged, the problem that ubiquity plasticity is relatively poor, cutting ability is bad has limited the use in the High Speed Machining field.Zinc alloy also can adopt direct casting in addition, the method manufacturing of hot extrusion and hot stamping.Patent 96118021.8 has been invented a kind of hot dip zinc base alloy and manufacture method thereof, it is characterized in that by Zn, and Al, three kinds of Sb are elementary composition.Be mainly used in surface heat immersion plating and protection.Patent 97100011.5 has been described a kind of rare-earth-Al-Zn alloy, and main component is Zn, and Al and rare earth are used for electroplating industry.Patent 200310089187.3 is a kind of tin-zinc-aluminium alloy wires, is to add aluminium to improve the performance of spray material on the alloy of tin zinc.Patent 03821428.8 relates to the equilibrator of a kind of pure zinc or aluminium zinc, mainly protects the protection of making method and aluminium zinc prescription.Above patent does not all relate to the machinability of zinc alloy and bar thereof.Have only patent ZL200710035063.0 to relate to a kind of high-strength simple-cutting zine-base alloy and preparation technology thereof, the main alloy element of protection is a copper: 2.5-2.65%, magnesium: 0.45-0.60%; aluminium: 0.20-0.35%; lanthanum: 0.01-0.06%, cerium: 0.15-0.20% does not comprise antimony element.Patent ZL200710066979.2 relates to a kind of high-density zinc-base alloy counterbalance material, and main alloy formula is made up of zinc-copper antimony.The present invention lays particular emphasis on and improves Cutting Property of Zinc Alloy and the new alloy formula of hot workability design, is different from traditional zinc die casting alloys material.
Summary of the invention
Technical problem to be solved by this invention is that the present situation at prior art provides a kind of free machining antimony-zinc alloy.
Another technical problem to be solved by this invention is the preparation method that a kind of easy-cutting antimony-zinc alloy bar is provided at the present situation of prior art.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this easy-cutting antimony-zinc alloy, it is characterized in that the aluminium of consisting of of this alloy: 0.5-15wt%, and the antimony of 0.5-8wt%, surplus is zinc and unavoidable impurities.
In the such scheme, the preferred 2-4wt% of the content of described antimony, the preferred 2-12wt% of the content of described aluminium.
A kind of preparation method of easy-cutting antimony-zinc alloy bar, it is characterized in that the aluminium of 0.5-15wt%, the antimony of 0.5-8wt% and zinc and other unavoidable impurities of surplus are made the alloy strand by the method for diecasting or D.C.casting, smelting temperature is 400 ℃-500 ℃, then this alloy strand is hot extruded into blank in 150-380 ℃, the blank that obtains is stretched by cold working drawing or straight line obtains the easy-cutting antimony-zinc alloy bar at last.
Compared with prior art, antimony-zinc alloy provided by the present invention, by intermetallic compound AlSb separating out in the aluminium zinc matrix, when making machining both at cutter and storeroom lubricate, can form " void effect " as stress raiser again, make smear metal frangible, thereby improve machinability, improve the stock-removing efficiency and the cutting precision of this alloy greatly, had good formability and workability.
The melting of this easy-cutting antimony-zinc alloy can be adopted traditional methods such as induction heating, makes blank with the method for die, D.C.casting or sequence casting; Adopt the method for hot extrusion to make required bar, wire rod or section bar blank then, wherein the temperature of hot extrusion is at 150-380 ℃, use cold worked method to make the rod product of all size at last, the shape and size of rod product can be as required by follow-up machining decision.
The easy cutting zinc alloy bar that uses alloy formula of the present invention and method to make, its cutting ability and efficient can be approaching with the leaded brass bar apparently higher than zinc die casting alloys, can be used as the substitute of some lead brass alloy bars.
Free-cutting deformation zinc alloy material provided by the invention has characteristics such as unleaded, no cadmium, good, the no magnetic of environmental protection characteristic, sparkless discharge, excellent cutting performance, be easy to processing, electroplate easily, mechanical property is moderate, can be used as the basic raw material of instrument lathe, self-acting lathe and lathe in machining and the substitute products of various free-cutting copper alloy rod and zinc die casting alloys.
Description of drawings
Fig. 1 is the 500 times metallographs of mother alloy blank when 300 ℃ of hot extrusion states in the embodiment of the invention 1
Fig. 2 is the stereoscan photograph of mother alloy blank when 300 ℃ of hot extrusion states in the embodiment of the invention 1;
Fig. 3 is the energy spectrogram of mother alloy blank when 300 ℃ of hot extrusion states in the embodiment of the invention 1.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
The preparation method of embodiment of the invention interalloy, if no special instructions, i.e. preparation as follows:
Alloying constituent is made the alloy strand by the method for diecasting, D.C.casting or sequence casting, smelting temperature is 400 ℃-500 ℃, then this alloy strand is hot extruded into blank in 150-380 ℃, the blank that obtains is stretched by cold working drawing or straight line obtains the easy-cutting antimony-zinc alloy bar at last.
The zinc of 87.00wt%, the aluminium of 10.00wt%, the antimony of 3.00wt% are mixed, and the method for employing D.C.casting is made the mother alloy blank of 170 millimeters of diameters.Under 300 ℃ temperature, be hot extruded into pieces of bar stock then, make the bar of required diameter again with the method for associating drawing.Through measuring, the tensile strength of this bar is 320MPa, and unit elongation is 12%, and hardness is HB=85.With the cam-type self-acting lathe part is processed in this bar boring, smear metal is frangible, and efficient can reach 90% of C3604 lead and yellow-collation copper rod; Simultaneously the surface of part can be carried out nickel plating, chromium plating, surface treatment such as zinc-plated as required.
Fig. 1 is the 500 times metallographs of mother alloy blank when 300 ℃ of hot extrusion states.Black tissue among Fig. 1 is intermetallic compound phase AlSb.AlSb has the distribution of sizes of irregular shape and micron dimension, can cause alloy inside to have local stress concentration, the fracture origin during as cutting, the feasible easier cutting of bar that makes.
Fig. 2 and Fig. 3 are respectively the scanning electron microscope of mother alloy blank when 300 ℃ of hot extrusion states and energy spectrogram.The energy spectrum analysis of precipitated phase sees Table 1.As can be seen, the atom of Al and Sb is about 1: 1, and is consistent with the AlSb in the Al-Sb metallograph.
Table 1
| Element | ??Wt％ | ??At％ |
| ??AlK | ??17.79 | ??48.38 |
| ??SbL | ??78.24 | ??47.16 |
| ??ZnK | ??03.97 | ??47.16 |
| Matrix | Proofread and correct | ??ZAF |
Embodiment 2
The zinc of 83.00wt%, the aluminium of 15.00wt% and the antimony of 2.00wt% are mixed, adopt the method molten alloy of induction heating, make the alloy strand with the method for diecasting.Then strand is squeezed into pieces of bar stock under 200 ℃ temperature, makes the zinc alloy bar with the track type broaching machine.Tensile strength through measuring this bar is 380Mpa, and unit elongation is 15%.Behind the polishing aligning, on numerically-controlled machine, process electronic product, its working (machining) efficiency can reach 85% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
Embodiment 3
The zinc of 91.00wt%, the aluminium of 1.00wt%, the antimony of 8.00wt% are mixed, adopt the method melting of induction heating, method with steel die cast obtains the mother alloy strand, under 180 ℃ condition, be squeezed into the blank of alloy bar material, through multidie machine size to the finished product, again through obtaining finished product after the tube reducing of associating drawing, aligning, the polishing.This finished product is processed with cam type self-acting lathe, and working (machining) efficiency can reach 90% of same specification C3604 leaded brass.
The zinc of 84.50wt%, the aluminium of 15.00wt%, the antimony of 0.50wt% are mixed, use the metallurgical method of full continuous casting to make mother alloy strand blank, through 240 ℃ the alloy bar material that is crushed to.The tensile strength of bar is 430MPa, and unit elongation is 15%.Use the meter specially machined into after the blanking, make finished part, production efficiency can reach 75% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
Embodiment 5
The aluminium of 0.50wt%, the antimony of 6.0wt% and the zinc of surplus are mixed, use the metallurgical method of diecasting to make mother alloy strand blank, through 230 ℃ the alloy bar material that is crushed to.The tensile strength of bar is 340MPa, and unit elongation is 10%.Use the meter specially machined into after the blanking, make finished part, production efficiency can reach 85% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
Embodiment 6
The aluminium of 12.0wt%, the antimony of 4.0wt% and the zinc of surplus are mixed, use the metallurgical method of full continuous casting to make mother alloy strand blank, through 280 ℃ the alloy bar material that is crushed to.The tensile strength of bar is 440MPa, and unit elongation is 15%.Use the meter specially machined into after the blanking, make finished part, production efficiency can reach 70% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
Embodiment 7
The aluminium of 2.0wt%, the antimony of 4.0wt% and the zinc of surplus are mixed, use the metallurgical method of semicontinuous casting to make mother alloy strand blank, through 240 ℃ the alloy bar material that is crushed to.The tensile strength of bar is 390MPa, and unit elongation is 11%.Use the meter specially machined into after the blanking, make finished part, production efficiency can reach 80% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
Embodiment 8
The aluminium of 8.0wt%, the antimony of 3.0wt% and the zinc of surplus are mixed, use the metallurgical method of full continuous casting to make mother alloy strand blank, through 270 ℃ the alloy bar material that is crushed to.The tensile strength of bar is 430MPa, and unit elongation is 20%.Use the meter specially machined into after the blanking, make finished part, production efficiency can reach 70% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
Embodiment 9
The aluminium of 5.0wt%, the antimony of 3.0wt% and the zinc of surplus are mixed, use the metallurgical method of full continuous casting to make mother alloy strand blank, through 240 ℃ the alloy bar material that is crushed to.The tensile strength of bar is 420MPa, and unit elongation is 15%.Use the meter specially machined into after the blanking, make finished part, production efficiency can reach 75% of C3604 leaded brass bar.Piece surface can carry out nickel plating, chromium plating, surface treatment such as zinc-plated.
The part that does not relate in the foregoing description is same as the prior art.
Claims (3)
1. easy-cutting antimony-zinc alloy is characterized in that the aluminium of consisting of of this alloy: 0.5-15wt%, the antimony of 0.5-8wt%, and surplus is zinc and unavoidable impurities.
2. easy-cutting antimony-zinc alloy according to claim 1 is characterized in that described antimony is 2-4wt%, and described aluminium is 2-12wt%.
3. one kind prepares the method for easy-cutting antimony-zinc alloy bar according to claim 1, it is characterized in that alloying constituent makes the alloy strand by the method for diecasting or D.C.casting, smelting temperature is 400 ℃-500 ℃, then this alloy strand is hot extruded into blank in 150-380 ℃, the blank that obtains is stretched by cold working drawing or straight line obtains the easy-cutting antimony-zinc alloy bar at last.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105463254A (en) * | 2015-12-09 | 2016-04-06 | 周妙思 | Zinc alloy |
Citations (6)
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| FR321677A (en) * | 1902-06-02 | 1903-01-16 | Neild Elizabeth Emmeline | Welding improvements specially applied to aluminum |
| FR754945A (en) * | 1933-04-28 | 1933-11-16 | Cie Francaise Des Conduites D | New alloy and its applications |
| US4056366A (en) * | 1975-12-24 | 1977-11-01 | Inland Steel Company | Zinc-aluminum alloy coating and method of hot-dip coating |
| CN1155589A (en) * | 1996-01-25 | 1997-07-30 | 株洲冶炼厂 | Zinc based alloy and its manufacture |
| CN101008058A (en) * | 2007-01-26 | 2007-08-01 | 宁波博威集团股份有限公司 | High density zinc base alloy balance block and methods for manufacturing same |
| CN101092670A (en) * | 2007-07-23 | 2007-12-26 | 株洲冶炼集团股份有限公司 | Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating narrow steel strip, method and ingot mold |
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2010
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR321677A (en) * | 1902-06-02 | 1903-01-16 | Neild Elizabeth Emmeline | Welding improvements specially applied to aluminum |
| FR754945A (en) * | 1933-04-28 | 1933-11-16 | Cie Francaise Des Conduites D | New alloy and its applications |
| US4056366A (en) * | 1975-12-24 | 1977-11-01 | Inland Steel Company | Zinc-aluminum alloy coating and method of hot-dip coating |
| CN1155589A (en) * | 1996-01-25 | 1997-07-30 | 株洲冶炼厂 | Zinc based alloy and its manufacture |
| CN101008058A (en) * | 2007-01-26 | 2007-08-01 | 宁波博威集团股份有限公司 | High density zinc base alloy balance block and methods for manufacturing same |
| CN101092670A (en) * | 2007-07-23 | 2007-12-26 | 株洲冶炼集团股份有限公司 | Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating narrow steel strip, method and ingot mold |
Non-Patent Citations (2)
| Title |
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| 《上海有色金属》 20040331 陆伟等 铸造锌铝合金的研究进展及其应用 13-17 1-3 第25卷, 第1期 2 * |
| 《矿冶工程》 20061031 林高用等 锌合金切削性能的研究 96-98 1-2 第26卷, 第5期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463254A (en) * | 2015-12-09 | 2016-04-06 | 周妙思 | Zinc alloy |
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