CN101671770A - Heat treatment method of alloy containing volatile element - Google Patents
Heat treatment method of alloy containing volatile element Download PDFInfo
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- CN101671770A CN101671770A CN200910176434A CN200910176434A CN101671770A CN 101671770 A CN101671770 A CN 101671770A CN 200910176434 A CN200910176434 A CN 200910176434A CN 200910176434 A CN200910176434 A CN 200910176434A CN 101671770 A CN101671770 A CN 101671770A
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Abstract
The invention relates to a heat treatment method of an alloy containing volatile element. The method is characterized in that the heat treatment process is to adopting the alloy containing volatile element to perform heat preservation heat treatment at 0.105-0.110 Mpa under the protective atmosphere. The heat treatment method of the alloy containing volatile element can select different heat treatment temperatures according to the heat treatment demands of alloys containing different volatile elements, control the alloy to be under the barotropic condition by injecting protective gas, inhibitelements such as zinc, cadmium and the like to volatilize and prepare the alloy with good and non-oxidizable surface, low volatility of alloy elements and uniform and stable chemical composition.
Description
Technical field
The present invention relates to a kind of Volatile Elements heat treatment of alloy method that contains.
Background technology
Element such as zinc, cadmium vapour pressure height, it is volatile to be heated.The Volatile Elements such as zinc, cadmium that in many metallic substance, especially in electrician's welding flux alloy, contains more content.The alloy that contains Volatile Elements such as zinc, cadmium is in through the heat treatment process after the press working, if adopt conventional antivacuum thermal treatment, not only alloy is easy to oxidation, influence surface quality, and zinc, cadmium element are easy to volatilization, cause alloy composition to change, especially surface portion zinc, cadmium element volatile quantity are bigger, even exceed index request.And adopt conventional vacuum heat treatment, though can inhibited oxidation, the negative pressure in the vacuum heat treatment process in the stove can be aggravated the volatilization of elements such as zinc, cadmium, not only can cause alloy composition to change, and damage equipment vacuum system easily.Therefore, need in the heat treatment process to adopt an effective measure and suppress the volatilization of alloy material oxidation and zinc, cadmium element.
Summary of the invention
The objective of the invention is the deficiency that exists at above-mentioned prior art, the volatilization of elements such as a kind of effectively inhibited oxidation and zinc, cadmium is provided, what make that alloy composition do not change contains Volatile Elements heat treatment of alloy method.
The objective of the invention is to be achieved through the following technical solutions.
A kind of Volatile Elements heat treatment of alloy method that contains is characterized in that its heat treatment process is to contain the Volatile Elements alloy under 0.105MPa-0.110MPa pressure, to be incubated heat treated in the protective gas atmosphere.
A kind of Volatile Elements heat treatment of alloy method that contains of the present invention, the shielding gas that it is characterized in that its heat treatment process is a nitrogen.
A kind of Volatile Elements heat treatment of alloy method that contains of the present invention, the shielding gas that it is characterized in that its heat treatment process is an argon gas.
A kind of Volatile Elements heat treatment of alloy method that contains of the present invention; the heat-treating of alloy of containing volatile composition according to difference requires to select thermal treatment temp; the control alloy is charging into shielding gas to the pressure-fired condition; suppress to be similar to the volatilization of elements such as zinc, cadmium; obtain that not only surface quality is good, non-oxidation; and the alloying element volatile quantity is small, can guarantee that alloy composition is uniform and stable.
Embodiment
A kind of Volatile Elements heat treatment of alloy method that contains, its heat treatment process are to contain the Volatile Elements alloy under 0.105MPa-0.110MPa pressure, to be incubated heat treated in the protective gas atmosphere.
During operation, elder generation packs alloy material in the heat treatment furnace, open mechanical pump then, furnace chamber is evacuated, after vacuum reaches 3.2Pa, stops mechanical pump, open inflation valve simultaneously, charge into after shielding gas nitrogen or argon gas to pressure-fired furnace pressure is 0.105MPa, equipment is closed inflation valve automatically, stops inflation, begins heating; In the heat-processed since shielding gas expand, be the protection body of heater, in table, set air pressure lower value (0.105MPa) and higher limit (0.110MPa), equipment is opened pressure release valve automatically when the supreme pressure limiting power of gas expansion (0.110MPa), venting, pressure release, pressure release valve cuts out automatically when pressure drops to threshold pression (0.105MPa); In heat-processed,, set the air pressure upper limit because gas expansion for the protection body of heater, can bear pressure according to body of heater, equipment automatic deflation, pressure release after the supreme pressure limiting power of gas expansion, pressure release valve cuts out automatically after the stove internal gas pressure is reduced to threshold pression.Alloy material is behind insulation, stove internal cooling, and bubbling air is come out of the stove to normal atmosphere.Can prevent the alloy surface oxidation, and can effectively suppress the alloying element volatilization, can access the annealed state alloy material of chemical composition stability.
Embodiment 1
Heat treating method after the cold working of AgCuZnCd solder is: set air pressure lower value (0.105MPa) and higher limit (0.110MPa) before the shove charge in table.Earlier alloy material is sealed in the heat treatment furnace; open mechanical pump then; furnace chamber is evacuated; after reaching 3.2Pa, vacuum stops mechanical pump; open inflation valve, charge into shielding gas (nitrogen or argon gas) to pressure-fired (furnace pressure is 0.105MPa), equipment is closed inflation valve automatically; stop inflation, begin heating.Gas will expand in heat-processed, and equipment is opened pressure release valve automatically when the supreme pressure limiting power of gas expansion (0.110MPa), venting, pressure release, and pressure release valve cuts out automatically when pressure drops to threshold pression (0.105MPa).The AgCuZnCd alloy material is behind 500 ℃/1h insulation, stove internal cooling, and bubbling air is come out of the stove to normal atmosphere.
Embodiment 2
Heat treating method after the cold working of AgCuZnCdSn welding flux alloy is: set air pressure lower value (0.105MPa) and higher limit (0.110MPa) before the shove charge in table.Earlier alloy material is sealed in the heat treatment furnace; open mechanical pump then; furnace chamber is evacuated; after reaching 3.2Pa, vacuum stops mechanical pump; open inflation valve, charge into shielding gas (nitrogen or argon gas) to pressure-fired (furnace pressure is 0.105MPa), equipment is closed inflation valve automatically; stop inflation, begin heating.Gas will expand in heat-processed, and equipment is opened pressure release valve automatically when the supreme pressure limiting power of gas expansion (0.110MPa), venting, pressure release, and pressure release valve cuts out automatically when pressure drops to threshold pression (0.105MPa).The AgCuZnCdSn alloy material is behind 450 ℃/1h insulation, stove internal cooling, and bubbling air is come out of the stove to normal atmosphere.
Claims (3)
1. one kind contains Volatile Elements heat treatment of alloy method, it is characterized in that its heat treatment process is to contain the Volatile Elements alloy under 0.105MPa-0.110MPa pressure, to be incubated heat treated in the protective gas atmosphere.
2. a kind of Volatile Elements heat treatment of alloy method that contains according to claim 1, the shielding gas that it is characterized in that its heat treatment process is a nitrogen.
3. a kind of Volatile Elements heat treatment of alloy method that contains according to claim 1, the shielding gas that it is characterized in that its heat treatment process is an argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910176434A CN101671770A (en) | 2009-09-15 | 2009-09-15 | Heat treatment method of alloy containing volatile element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910176434A CN101671770A (en) | 2009-09-15 | 2009-09-15 | Heat treatment method of alloy containing volatile element |
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| Publication Number | Publication Date |
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| CN101671770A true CN101671770A (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910176434A Pending CN101671770A (en) | 2009-09-15 | 2009-09-15 | Heat treatment method of alloy containing volatile element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270056A (en) * | 2020-03-06 | 2020-06-12 | 武汉理工大学 | Method for heat treatment of alloy containing volatile element in saturated steam environment of the element |
-
2009
- 2009-09-15 CN CN200910176434A patent/CN101671770A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270056A (en) * | 2020-03-06 | 2020-06-12 | 武汉理工大学 | Method for heat treatment of alloy containing volatile element in saturated steam environment of the element |
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Open date: 20100317 |