CN103422038A - Method for heat treatment of lining die sleeve of high-temperature copper alloy extruding machine - Google Patents
Method for heat treatment of lining die sleeve of high-temperature copper alloy extruding machine Download PDFInfo
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- CN103422038A CN103422038A CN201310397675XA CN201310397675A CN103422038A CN 103422038 A CN103422038 A CN 103422038A CN 201310397675X A CN201310397675X A CN 201310397675XA CN 201310397675 A CN201310397675 A CN 201310397675A CN 103422038 A CN103422038 A CN 103422038A
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Abstract
The invention provides a method for heat treatment of a GH4169 lining die sleeve of a high-temperature copper alloy extruding machine. The method for heat treatment includes the step that the copper alloy extrusion lining die sleeve made of a GH4169 material is placed in a vacuum heat treatment furnace, the temperature rises to 940-960 DEG C at the speed not more than 100 DEG C per hour, the temperature is kept for 40 minutes, and the vacuum degree coefficient of the vacuum heat treatment furnace is 8x10-5Pa; the GH4169 lining die sleeve is cooled to 710-730 DEG C along with the furnace after the temperature is kept, the temperature is kept for 10 hours, the GH4169 lining die sleeve is cooled to 610-630 DEG C at the speed of 130-150 DEG C per hour, the temperature is kept for 20 hours, and then the GH4169 lining die sleeve is cooled to 350 DEG C along with the furnace and rapidly cooled to the room temperature after nitrogen is inflated. The obtained GH4169 lining die sleeve for high temperature has better high temperature and low-cycle-fatigue-resistant performance, the grain size of the GH4169 lining die sleeve is refined further, and therefore better high temperature performance is obtained and the service life of the die sleeve is prolonged by 3.5 times.
Description
Technical field
The present invention relates to a kind of heat treating method of the die sleeve of the liner for the high-temperature copper alloy extrusion machine, relate in particular to a kind of heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve.
Background technology
Existing GH4169 is to be placed on vacuum heat treatment furnace for the former heat treating method of the liner die sleeve material of high-temperature copper alloy extrusion machine, with the speed that is not more than 200 ℃/h, is warming up to 1065 ℃, is incubated 60 minutes, water-cooled; Again at 720 ℃ of insulation 8h, be chilled to 620 ℃ and be incubated 8 hours with the speed stove of 55 ℃/h afterwards, then with stove, be chilled to room temperature and get final product.
High-temperature yield strength, Testing Tensile Strength at Elevated Temperature, thermal fatigue property, impelling strength, the grain fineness number of the high-temperature copper alloy extrusion machine liner die sleeve GH4169 material that above-mentioned heat treating method obtains are low, the low serious wear that causes of its intensity in high-temperature copper alloy extrusion machine liner die sleeve is used, low the causing in high-temperature copper alloy extrusion machine liner die sleeve is used of impelling strength makes high-temperature copper alloy extrusion machine liner die sleeve cracking because bearing high surging force.
Summary of the invention
The object of the present invention is to provide a kind of heat treating method of the die sleeve of the liner for the high-temperature copper alloy extrusion machine, a kind of heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve especially is provided, to solve problems of the prior art.The GH4169 liner die sleeve material of the high-temperature copper alloy extruding that this heat treating method obtains has the anti-low cycle fatigue property of better high temperature, the refinement more of its grain fineness number, thus obtaining better high-temperature behavior, die sleeve has improved 3.5 times work-ing life.
To achieve these goals, the present invention adopts following technical scheme:
A kind of heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve, comprise the steps:
(1) the copper alloy extrusion machine liner die sleeve of the GH4169 material being made is placed in vacuum heat treatment furnace, with the speed that is not more than 100 ℃/h, is warming up to 940～960 ℃, is incubated 40 minutes, and the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 710～730 ℃ and be incubated 10h, be chilled to 610～630 ℃ and be incubated 20 hours with the speed stove of 130～150 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve.
In above-mentioned steps (2), inflated with nitrogen fast cooling rate of cooling for 200 ℃/h, to be cooled to room temperature.
Preferably, the heat treating method of the described liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve, comprise the steps:
(1) the GH4169 liner die sleeve of the copper alloy extrusion machine of the GH4169 material being made is placed in vacuum heat treatment furnace, with the speed of 100 ℃/h, is warming up to 950 ℃, is incubated 40 minutes, and the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 720 ℃ and be incubated 10h, be chilled to 620 ℃ and be incubated 20 hours with the speed stove of 140 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve.
Above-mentioned GH4169 material is the GH4169 material of GB/T14992-2005 standard.
Above-mentioned GH4169 material, its chemical composition and corresponding weight percentage are:
Ni:50～55%, Cr:17～27%, Mo:2.8～3.3%, Nb:4.75～5.50%, Co:0～1.0%, C:0～0.08%, Mn:0～0.35%, Si:0～0.35%, S:0～0.015%, Cu:0～0.30%, Al:0.20～0.80%, Ti:0.65～1.15%, all the other are Fe and inevitable impurity.
Preferably, above-mentioned GH4169 material, its chemical composition and corresponding weight percentage are:
Ni:50～55%, Cr:17～27%, Mo:2.8～3.3%, Nb:4.75～5.50%, 0<Co<1.0%, 0<C<0.08%, 0<Mn<0.35%, 0<Si<0.35%, S:0～0.015%, 0<Cu<0.30%, Al:0.20～0.80%, Ti:0.65～1.15%, all the other are Fe and inevitable impurity.
Above-mentioned can be at the applied at elevated temperature of 650 ℃ through the heat treated liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve.
The present invention compared with prior art has following beneficial effect:
After the liner die sleeve of the high-temperature copper alloy extrusion machine that the present invention makes the GH4169 material is heat-treated, make the GH4169 liner die sleeve material obtained obtain the better anti-low cycle fatigue property of high temperature, the refinement more of its grain fineness number, thus obtain better high-temperature behavior.
The heat treating method of the GH4169 liner die sleeve of copper alloy extrusion machine for high temperature of the present invention, improved greatly the work-ing life of die sleeve, the heat treating method of this liner die sleeve makes the production capacity of 2000 tons of the former extruding copper alloys of this liner die sleeve be increased to 7000 tons, has improved 3.5 times than the heat treating method of the prior art life-span.
Embodiment
Content for a better understanding of the present invention, be described further below in conjunction with specific embodiment.
Embodiment 1
The liner die sleeve of the high-temperature copper alloy extrusion machine that the GH4169 material is made, the chemical composition of its GH4169 material and the weight percentage of each chemical composition are as shown in table 1:
Table 1 unit: weight percentage
The heat treating method that is used for the GH4169 liner die sleeve of high-temperature copper alloy extrusion machine is:
(1) the GH4169 liner die sleeve of copper alloy extrusion machine is placed in to vacuum heat treatment furnace, with the speed of 100 ℃/h, is warming up to 950 ℃, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 720 ℃ and be incubated 10h, be chilled to 620 ℃ and be incubated 20 hours with the speed stove of 140 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is cooled to room temperature with 200 ℃/h and is quickly cooled to room temperature afterwards, obtains the liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve of the present embodiment.
The liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve material that the present embodiment is obtained is detected, and its test item and detected result are as follows:
1) detection of grain fineness number: testing method is for to be tested according to GB/T14999.5-1994; Test result is: the grain fineness number detected result of former heat treating method is: 4 grades, the grain fineness number detected result of the present embodiment heat treating method is: 8 grades, the refinement of grain fineness number improves mechanical property, impelling strength, crystal grain is tiny, can effectively prevent dislocation and slippage between crystallites, that is to say and will make Materials Fracture need larger power.
2) test of high-temperature behavior: testing method is for to be tested according to GB/T4338-1995; Test data and result are: the test result of the high-temperature behavior of material that former heat treating method of the prior art obtains is as shown in table 2, and the test result of the high-temperature behavior of the material that heat treating method obtains of the present embodiment is as shown in table 3.
Table 2
Table 3
3) test in die sleeve work-ing life: actually use the turnout contrast to be tested, its test result is as shown in table 4:
Table 4
Embodiment 2
The liner die sleeve of the high-temperature copper alloy extrusion machine that the GH4169 material is made, the chemical composition of its GH4169 material and the weight percentage of each chemical composition are as shown in table 5:
Table 5 unit: weight percentage
The heat treating method that is used for the GH4169 liner die sleeve of high-temperature copper alloy extrusion machine is:
(1) the GH4169 liner die sleeve of copper alloy extrusion machine is placed in to vacuum heat treatment furnace, with the speed of 100 ℃/h, is warming up to 960 ℃, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 710 ℃ and be incubated 10h, be chilled to 610 ℃ and be incubated 20 hours with the speed stove of 150 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is cooled to room temperature with 200 ℃/h and is quickly cooled to room temperature afterwards, obtains the liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve of the present embodiment.
The liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve material that the present embodiment is obtained is detected, and its test item and detected result are as follows:
1) detection of grain fineness number: testing method is for to be tested according to GB/T14999.5-1994; Test result is: the grain fineness number detected result of former heat treating method is: 4 grades, the grain fineness number detected result of the present embodiment heat treating method is: 8 grades, the refinement of grain fineness number improves mechanical property, impelling strength, crystal grain is tiny, can effectively prevent dislocation and slippage between crystallites, that is to say and will make Materials Fracture need larger power.
2) test of high-temperature behavior: testing method is for to be tested according to GB/T4338-1995; Test data and result are: the test result of the high-temperature behavior of material that former heat treating method of the prior art obtains is as shown in table 2, and the test result of the high-temperature behavior of the material that heat treating method obtains of the present embodiment is as shown in table 6.
Table 6
3) test in die sleeve work-ing life: actually use the turnout contrast to be tested, consistent as shown in table 4 in embodiment 1 of its test result.
Embodiment 3
The liner die sleeve of the high-temperature copper alloy extrusion machine that the GH4169 material is made, the chemical composition of its GH4169 material and the weight percentage of each chemical composition are as shown in table 7:
Table 7 unit: weight percentage
The heat treating method that is used for the GH4169 liner die sleeve of high-temperature copper alloy extrusion machine is:
(1) the GH4169 liner die sleeve of copper alloy extrusion machine is placed in to vacuum heat treatment furnace, with the speed of 100 ℃/h, is warming up to 940 ℃, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 730 ℃ and be incubated 10h, be chilled to 630 ℃ and be incubated 20 hours with the speed stove of 130 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is cooled to room temperature with 200 ℃/h and is quickly cooled to room temperature afterwards, obtains the liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve of the present embodiment.
The liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve material that the present embodiment is obtained is detected, and its test item and detected result are as follows:
1) detection of grain fineness number: testing method is for to be tested according to GB/T14999.5-1994; Test result is: the grain fineness number detected result of former heat treating method is: 4 grades, the grain fineness number detected result of the present embodiment heat treating method is: 8 grades, the refinement of grain fineness number improves mechanical property, impelling strength, crystal grain is tiny, can effectively prevent dislocation and slippage between crystallites, that is to say and will make Materials Fracture need larger power.
2) test of high-temperature behavior: testing method is for to be tested according to GB/T4338-1995; Test data and result are: the test result of the high-temperature behavior of material that former heat treating method of the prior art obtains is as shown in table 2, and the test result of the high-temperature behavior of the material that heat treating method obtains of the present embodiment is as shown in table 8.
Table 8
3) test in die sleeve work-ing life: actually use the turnout contrast to be tested, consistent as shown in table 4 in embodiment 1 of its test result.
The above; it is only preferred embodiment of the present invention; not to any formal and substantial restriction of the present invention; should be understood that; for those skilled in the art; under the premise of not departing from the present invention, also can make some improvement and supplement, these improvement and supplement and also should be considered as falling into protection scope of the present invention.All those skilled in the art, without departing from the spirit and scope of the present invention, a little change of making when utilizing the disclosed above technology contents, the equivalent variations of modifying and developing, be equivalent embodiment of the present invention; Simultaneously, the change of any equivalent variations that all foundations essence technology of the present invention is done above-described embodiment, modification and differentiation, all still belong in the scope of technical scheme of the present invention.
Claims (6)
1. the heat treating method of the liner of the GH4169 for a high-temperature copper alloy extrusion machine die sleeve, comprise the steps:
(1) the copper alloy extrusion machine liner die sleeve of the GH4169 material being made is placed in vacuum heat treatment furnace, with the speed that is not more than 100 ℃/h, is warming up to 940～960 ℃, is incubated 40 minutes, and the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 710～730 ℃ and be incubated 10h, be chilled to 610～630 ℃ and be incubated 20 hours with the speed stove of 130～150 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve.
2. the heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve according to claim 1, is characterized in that, the heat treating method of the described liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve, comprise the steps:
(1) the GH4169 liner die sleeve of the copper alloy extrusion machine of the GH4169 material being made is placed in vacuum heat treatment furnace, with the speed of 100 ℃/h, is warming up to 950 ℃, is incubated 40 minutes, and the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5Pa;
(2) the GH4169 liner die sleeve of copper alloy extrusion machine after insulation is cooled to the furnace to 720 ℃ and be incubated 10h, be chilled to 620 ℃ and be incubated 20 hours with the speed stove of 140 ℃/h again, then cool to 350 ℃ with the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve.
3. the heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve according to claim 1 and 2, is characterized in that, in step (2), described inflated with nitrogen fast cooling rate of cooling for 200 ℃/h, to be cooled to room temperature.
4. the heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve according to claim 1 and 2, is characterized in that, described GH4169 material, and its chemical composition and corresponding weight percentage are:
Ni:50～55%, Cr:17～27%, Mo:2.8～3.3%, Nb:4.75～5.50%, Co:0～1.0%, C:0～0.08%, Mn:0～0.35%, Si:0～0.35%, S:0～0.015%, Cu:0～0.30%, Al:0.20～0.80%, Ti:0.65～1.15%, all the other are Fe and inevitable impurity.
5. the heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve according to claim 4, is characterized in that, described GH4169 material, and its chemical composition and corresponding weight percentage are:
Ni:50～55%, Cr:17～27%, Mo:2.8～3.3%, Nb:4.75～5.50%, 0<Co<1.0%, 0<C<0.08%, 0<Mn<0.35%, 0<Si<0.35%, S:0～0.015%, 0<Cu<0.30%, Al:0.20～0.80%, Ti:0.65～1.15%, all the other are Fe and inevitable impurity.
6. the heat treating method of the liner of the GH4169 for high-temperature copper alloy extrusion machine die sleeve according to claim 1 and 2, is characterized in that, the liner of the GH4169 for the high-temperature copper alloy extrusion machine die sleeve obtained can be at the applied at elevated temperature of 650 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498234A (en) * | 2016-11-01 | 2017-03-15 | 河钢股份有限公司 | Continuously extruded die cavity plug material of a kind of combination type and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004256840A (en) * | 2003-02-24 | 2004-09-16 | Japan Steel Works Ltd:The | COMPOSITE REINFORCED TYPE Ni BASED SUPERALLOY, AND PRODUCTION METHOD THEREFOR |
| JP2007009279A (en) * | 2005-06-30 | 2007-01-18 | Japan Steel Works Ltd:The | Ni-Fe-BASE ALLOY, AND METHOD FOR MANUFACTURING Ni-Fe-BASE ALLOY MATERIAL |
| US20070163688A1 (en) * | 2003-05-01 | 2007-07-19 | Ati Properties, Inc. | Methods of Processing Nickel-Titanium Alloys |
| EP2138601A1 (en) * | 2008-06-16 | 2009-12-30 | Korea Institute Of Machinery & Materials | A heat treatment method of a ni-based superalloy for wave-type grain boundary and a ni-based superalloy produced accordingly |
| CN103225050A (en) * | 2013-05-20 | 2013-07-31 | 安徽工业大学 | Production method of fine-grain high-strength GH4169 alloy by hot rolling |
| CN103240418A (en) * | 2013-05-23 | 2013-08-14 | 北京科技大学 | Near-net shaping method for charging turbine with hollow internal structure |
-
2013
- 2013-09-04 CN CN201310397675.XA patent/CN103422038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004256840A (en) * | 2003-02-24 | 2004-09-16 | Japan Steel Works Ltd:The | COMPOSITE REINFORCED TYPE Ni BASED SUPERALLOY, AND PRODUCTION METHOD THEREFOR |
| US20070163688A1 (en) * | 2003-05-01 | 2007-07-19 | Ati Properties, Inc. | Methods of Processing Nickel-Titanium Alloys |
| JP2007009279A (en) * | 2005-06-30 | 2007-01-18 | Japan Steel Works Ltd:The | Ni-Fe-BASE ALLOY, AND METHOD FOR MANUFACTURING Ni-Fe-BASE ALLOY MATERIAL |
| EP2138601A1 (en) * | 2008-06-16 | 2009-12-30 | Korea Institute Of Machinery & Materials | A heat treatment method of a ni-based superalloy for wave-type grain boundary and a ni-based superalloy produced accordingly |
| CN103225050A (en) * | 2013-05-20 | 2013-07-31 | 安徽工业大学 | Production method of fine-grain high-strength GH4169 alloy by hot rolling |
| CN103240418A (en) * | 2013-05-23 | 2013-08-14 | 北京科技大学 | Near-net shaping method for charging turbine with hollow internal structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498234A (en) * | 2016-11-01 | 2017-03-15 | 河钢股份有限公司 | Continuously extruded die cavity plug material of a kind of combination type and preparation method thereof |
| CN106498234B (en) * | 2016-11-01 | 2018-01-30 | 河钢股份有限公司 | A kind of continuously extruded die cavity plug material of combined type and preparation method thereof |
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Address after: 201807, room 918, building A, 1355 Chengbei Road, Shanghai, Jiading District Patentee after: SHANGHAI KANGSHENG AEROSPACE TECHNOLOGY CO., LTD. Address before: 201807, room 918, building A, 1355 Chengbei Road, Shanghai, Jiading District Patentee before: Shanghai Kangsheng Super Alloy Co., Ltd. |