CN103334020A - Smelting method of alloy with toxic steam - Google Patents
Smelting method of alloy with toxic steam Download PDFInfo
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- CN103334020A CN103334020A CN201310241765XA CN201310241765A CN103334020A CN 103334020 A CN103334020 A CN 103334020A CN 201310241765X A CN201310241765X A CN 201310241765XA CN 201310241765 A CN201310241765 A CN 201310241765A CN 103334020 A CN103334020 A CN 103334020A
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Abstract
The invention discloses a smelting method of an alloy with toxic steam. The smelting method comprises the following steps of: (A) processing a stainless steel tubular container; (B) packaging and firmly welding alloy components; (C) vacuumizing and carrying out plugging welding; (D) heating in a box-type heating furnace so that all the alloy components can be smelted; and (E) freezing rapidly, and taking down an end plug to obtain an alloy block. By adopting the method, the alloy components in the smelting state are isolated from air, so that toxic metal steam is prevented from overflowing, and the problem of volatilization of the toxic metal components is solved. The alloy components prior to smelting are determined, the alloy components obtained after smelting are completely coincided with the alloy components packaged previously, and the loss of the components is avoided, so that the alloy components can be accurately controlled; and besides, the problem of oxidization can be avoided due to metal isolated from the outside, so that impurities are prevented from being introduced in the alloy, and the quality of the alloy is improved.
Description
Technical field
The present invention relates to the alloy melting method in the metallurgy industry, specifically is a kind of melting method that contains poisonous steam alloy.
Background technology
Alloy is metal and the material with metallic character that synthesized of the certain method of nonmetal warp by two or more.Generally get by fusing into uniform liquid and solidifying.According to the number of component, can be divided into binary alloy, ternary alloy and multicomponent alloy.Usually be that other non-metallic elements of base interpolation are called alloy by the metallic substance with metallic character that alloying technology (melting, mechanical alloying, sintering, vapour deposition etc.) forms with two or more metallic element or with the metal.
The melting of alloy is necessity and the key link of research metal alloy compositions performance, the existing ripe experimental technique of domestic melting at alloy material has also been formulated corresponding national standard, various dissimilar alloy material melting experimental installations are also deposited out not poor at present in market, but the fusing point difference at each element in the alloying constituent is big, the alloy melting experimental technique that particularly contains poisonous steam alloy constituent element does not but have good test method, also do not have corresponding national standard or industry standard, also not seeing simultaneously has specially at the melting equipment that contains poisonous steam alloy.Along with the requirement to type material of the continuous development of China's equipment manufacture and new and high technology, the smelting technique that contains poisonous steam alloy will become the technical bottleneck of new material development.
Summary of the invention
The object of the present invention is to provide to be applied to a kind of melting method that contains poisonous steam alloy, solve the volatilization problem of present poisonous steam alloy poisonous steam alloy constituent element in fusion process, reach the purpose of accurate control alloy compositions content.
Purpose of the present invention is achieved through the following technical solutions:
A kind of melting method that contains poisonous steam alloy may further comprise the steps:
(A) processing stainless steel tubular vessel adopts high temperature resistant stainless steel materials processing to go out the tubular vessel of both ends open and two end plugs that are complementary with tubular vessel, and processes an aperture at tubular vessel or one of them end plug;
(B) the alloy constituent element is carried out proportioning by the required composition of alloy, the alloy constituent element after proportioning is good is packaged in the stainless steel tubulose container, and with end plug and stainless steel tubulose container firm welding;
(C) stainless steel tubulose internal tank is vacuumized processing, the welding of blocking up subsequently from processing foraminate end plug or tubular vessel;
(D) the melting sample is positioned in the box type heater heats with packaged treating, temperature to be heated is increased to the fusing point of the constituent element correspondence that fusing point is the highest in the alloy constituent element, keeps this temperature to make the alloy constituent element all melt;
(E) rapid solidification takes off end plug, obtains alloy block.
The present invention adopts tubular vessel as the object of heating, and the alloy constituent element is positioned at tubular vessel, by the mode that vacuumizes, can the alloy constituent element under the melting state and air is isolated, thereby avoided toxic metal steam to overflow, solved the volatilization problem of toxic metal constituent element, alloy constituent element before the melting is determined, the alloying constituent that obtains later on of melting is in full accord with the alloy composition of packing into so, without any the loss of component, makes that the composition of alloy is precisely controlled, simultaneously, the metal that is hedged off from the outer world can be avoided problems such as oxidation, has avoided introducing in the alloy problem of impurity, has improved the quality of alloy.
When vacuumizing in the described step (C), the vacuum tightness in the tubular vessel is greater than 1.0 * 10
-2Pa.
After described step (C) has been welded, also carry out helium leak test, the stainless steel tubulose container that at first will be packaged with sample is put into an encloses container, charge into the helium of 4MPa and pressurize 15 minutes in the encloses container, the stainless steel tubulose container that will be packaged with sample then takes out and puts into another encloses container, whether this encloses container, measuring simultaneously has helium to exist in this encloses container if being vacuumized processing.Further, in order to guarantee the vacuum condition in the tubular vessel, can adopt vacuum chamber according to the basic leak-hunting principle of helium leak test, with helium as tracer gas, in vacuum chamber, helium is charged into workpiece, then by Helium leak detector energy high precision, the rapid leak case of judging workpiece accurately, if keep vacuum state in the tubular vessel, then can carry out melting, otherwise need vacuumize again and weld.
When carrying out step (D), also stainless steel tubulose container is overturn.Further, in order to improve the homogeneity of alloy, need in the process of heating, overturn to stainless steel tubulose container, treat that alloy constituent element sample melts back insulation 2 hours fully, subsequently stainless steel tubulose container is overturn and wave 1～2 minute, alloy constituent element sample is fully mixed in stainless steel tubulose container, repeat aforesaid operations 5～6 times, can reach well-mixed purpose.
In the described step (E), rapid solidification refers at room temperature cool off in the aqueous solution.Further, quick cooling purpose is to make the alloy phase under the molten state to remain to room temperature and does not take place to change mutually, rapid solidification is a kind of type of cooling behind the alloy melting, can as required stainless steel tubulose container not carried out rapid solidification, can select other type of cooling, as, air cooling cold with stove etc.
The present invention compared with prior art has following advantage and beneficial effect:
A kind of melting method that contains poisonous steam alloy of 1 the present invention, adopt tubular vessel as the object of heating, and the alloy constituent element is positioned at tubular vessel, by the mode that vacuumizes, can the alloy constituent element under the melting state and air is isolated, thereby avoided toxic metal steam to overflow, solved the volatilization problem of toxic metal constituent element, alloy constituent element before the melting is determined, the alloying constituent that obtains later on of melting is in full accord with the alloy composition of packing into so, loss without any component, make that the composition of alloy is precisely controlled, simultaneously, the metal that is hedged off from the outer world can be avoided problems such as oxidation, avoid introducing in the alloy problem of impurity, improved the quality of alloy;
A kind of melting method that contains poisonous steam alloy of 2 the present invention overturns to packaged sample in the fusion process, thereby makes alloying constituent more even;
After a kind of melting method that contains poisonous steam alloy of 3 the present invention, melting finish packaged sample is carried out rapid solidification, thereby effectively controlled alloying constituent generation segregation.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment
A kind of melting method that contains poisonous steam alloy of the present invention, at first adopting 0Cr18Ni10Ti high temperature resistant stainless steel pipe to process internal diameter is Φ 20mm, thickness of pipe is 2mm, length is the container of 200mm, adopting 0Cr18Ni10Ti high temperature resistant stainless steel rod to process diameter simultaneously is Φ 20mm, highly be 2 of the cylindric end plugs of 20mm, 1 right cylinder aperture that to open a diameter vertically be Φ 1mm wherein; Ag-In-Cd-Sn quad alloy constituent element is carried out proportioning by the required composition of this alloy, and the alloy constituent element after proportioning is good is packaged in the stainless steel tubulose container, and with end plug and stainless steel tubulose container firm welding.From processing foraminate end plug stainless steel tubulose internal tank is vacuumized processing, when vacuum tightness reaches 1.0 * 10
-3The above back of Pa is to the container firm welding of blocking up.The melting sample is positioned in the box type heater heats with packaged treating, Heating temperature rises to 1000 ℃ to guarantee that the highest Ag of fusing point can melt fully in the Ag-In-Cd-Sn quad alloy, be incubated 2 hours, subsequently stainless steel tubulose container is overturn and wave 1 ~ 2 minute, alloy constituent element sample is fully mixed in stainless steel tubulose container, be incubated 2 hours again in stove, overturn subsequently again and wave 1 ~ 2 minute, so repeatable operation is 5 ~ 6 times.The polymer solution in water that tubular vessel is taken out in process furnace and puts into rapidly under the room temperature is cooled off fast, treats to adopt machining process to take off end plug after tubular vessel is cooled to room temperature, obtains alloy block.With alloy block from different positions sampling and make scanning electron microscope example, the microscopic appearance of different zones and quantitative analysis elemental composition in the bound energy spectrometer analytic sample under scanning electron microscope.Microscopic appearance and EDAX results show that elemental composition distributes more even in the sample.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and any simple modification, the equivalent variations on every foundation technical spirit of the present invention above embodiment done all fall within protection scope of the present invention.
Claims (5)
1. a melting method that contains poisonous steam alloy is characterized in that, may further comprise the steps:
(A) processing stainless steel tubular vessel adopts high temperature resistant stainless steel materials processing to go out the tubular vessel of both ends open and two end plugs that are complementary with tubular vessel, and processes an aperture at tubular vessel or one of them end plug;
(B) the alloy constituent element is carried out proportioning by the required composition of alloy, the alloy constituent element after proportioning is good is packaged in the stainless steel tubulose container, and with end plug and stainless steel tubulose container firm welding;
(C) stainless steel tubulose internal tank is vacuumized processing, the welding of blocking up subsequently from processing foraminate end plug or tubular vessel;
(D) the melting sample is positioned in the box type heater heats with packaged treating, temperature to be heated is increased to the fusing point of the constituent element correspondence that fusing point is the highest in the alloy constituent element, keeps this temperature to make the alloy constituent element all melt;
(E) rapid solidification takes off end plug, obtains alloy block.
2. a kind of melting method that contains poisonous steam alloy according to claim 1 is characterized in that: when vacuumizing in the described step (C), the vacuum tightness in the tubular vessel is greater than 1.0 * 10
-2Pa.
3. a kind of melting method that contains poisonous steam alloy according to claim 1, it is characterized in that: after described step (C) has been welded, also carry out helium leak test, the stainless steel tubulose container that at first will be packaged with sample is put into an encloses container, charge into the helium of 4MPa and pressurize 15 minutes then in the encloses container, the stainless steel tubulose container that will be packaged with sample then takes out and puts into another encloses container, whether this encloses container, measuring simultaneously has helium to exist in this encloses container if being vacuumized processing.
4. according to any described a kind of melting method that contains poisonous steam alloy in the claim 1 to 3, it is characterized in that: when carrying out step (D), also stainless steel tubulose container is overturn.
5. according to any described a kind of melting method that contains poisonous steam alloy in the claim 1 to 3, it is characterized in that: in the described step (E), rapid solidification refers at room temperature cool off in the aqueous solution.
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| CN201310241765XA CN103334020A (en) | 2013-06-19 | 2013-06-19 | Smelting method of alloy with toxic steam |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041888A (en) * | 2007-04-19 | 2007-09-26 | 沈阳工业大学 | Technique method of high-strength magnesium alloy liquid shock cooling solid soluble and aging strengthening |
| CN101118197A (en) * | 2007-09-06 | 2008-02-06 | 中国核动力研究设计院 | High-temperature high pressure helium leak detection method and apparatus for detecting leakage thereof |
| CN101307397A (en) * | 2008-04-15 | 2008-11-19 | 成都先锋材料有限公司 | Vacuum smelting method and apparatus for copper-indium-gallium-selenium photovoltaic material |
-
2013
- 2013-06-19 CN CN201310241765XA patent/CN103334020A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041888A (en) * | 2007-04-19 | 2007-09-26 | 沈阳工业大学 | Technique method of high-strength magnesium alloy liquid shock cooling solid soluble and aging strengthening |
| CN101118197A (en) * | 2007-09-06 | 2008-02-06 | 中国核动力研究设计院 | High-temperature high pressure helium leak detection method and apparatus for detecting leakage thereof |
| CN101307397A (en) * | 2008-04-15 | 2008-11-19 | 成都先锋材料有限公司 | Vacuum smelting method and apparatus for copper-indium-gallium-selenium photovoltaic material |
Non-Patent Citations (2)
| Title |
|---|
| 郭建亭: "《有序金属间化合物镍铝合金》", 31 December 2013, article ""有序金属间化合物镍铝合金"", pages: 587 * |
| 韩继城: "简易真空加热炉", 《金属加工（热加工）》, no. 02, 31 December 1985 (1985-12-31), pages 21 * |
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Application publication date: 20131002 |