CN103422038B - 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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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 liner die sleeve for high-temperature copper alloy extrusion machine, particularly relate to a kind of heat treating method of the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine.
Background technology
The former heat treating method that existing GH4169 is used for the liner die sleeve material of high-temperature copper alloy extrusion machine is placed in vacuum heat treatment furnace, to be not more than the ramp to 1065 DEG C of 200 DEG C/h, is incubated 60 minutes, water-cooled; Again at 720 DEG C of insulation 8h, be chilled to 620 DEG C with the speed stove of 55 DEG C/h afterwards and be incubated 8 hours, being then chilled to room temperature with stove.
The high-temperature yield strength of the high-temperature copper alloy extrusion machine liner die sleeve GH4169 material that above-mentioned heat treating method obtains, Testing Tensile Strength at Elevated Temperature, thermal fatigue property, impelling strength, grain fineness number are low, in high-temperature copper alloy extrusion machine liner die sleeve uses, its intensity is low causes serious wear, and low the causing of impelling strength makes high-temperature copper alloy extrusion machine liner die sleeve ftracture because bearing high surging force in high-temperature copper alloy extrusion machine liner die sleeve uses.
Summary of the invention
The object of the present invention is to provide a kind of heat treating method of the liner die sleeve for high-temperature copper alloy extrusion machine, especially provide a kind of heat treating method of the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine, 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 resistance to low cycle fatigue property of better high temperature, the refinement more of its grain fineness number, thus obtains better high-temperature behavior, and die sleeve improves 3.5 times work-ing life.
To achieve these goals, the present invention adopts following technical scheme:
For a heat treating method for the GH4169 liner die sleeve of high-temperature copper alloy extrusion machine, comprise the steps:
(1) the copper alloy extrusion machine liner die sleeve that GH4169 material makes is placed in vacuum heat treatment furnace, to be not more than ramp to 940 ~ 960 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 710 ~ 730 DEG C and is incubated 10h, be chilled to 610 ~ 630 DEG C with the speed stove of 130 ~ 150 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described GH4169 liner die sleeve for high-temperature copper alloy extrusion machine.
In above-mentioned steps (2), the rate of cooling that inflated with nitrogen cools fast is for be cooled to room temperature with 200 DEG C/h.
Preferably, the heat treating method of the described GH4169 liner die sleeve for high-temperature copper alloy extrusion machine, comprises the steps:
(1) the GH4169 liner die sleeve of the copper alloy extrusion machine made by GH4169 material is placed in vacuum heat treatment furnace, and with the ramp to 950 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 720 DEG C and is incubated 10h, be chilled to 620 DEG C with the speed stove of 140 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described GH4169 liner die sleeve for high-temperature copper alloy extrusion machine.
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 at the applied at elevated temperature of 650 DEG C through the heat treated GH4169 liner die sleeve for high-temperature copper alloy extrusion machine.
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 GH4169 material makes by the present invention is heat-treated, make the GH4169 liner die sleeve material of acquisition obtain the better resistance to 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 high temperature copper alloy extrusion machine of the present invention, improve the work-ing life of die sleeve greatly, the heat treating method of this liner die sleeve makes the production capacity of the former extruding copper alloy of this liner die sleeve 2000 tons be increased to 7000 tons, improves 3.5 times than the heat treating method life-span of the prior art.
Embodiment
Content for a better understanding of the present invention, is described further below in conjunction with specific embodiment.
Embodiment 1
The liner die sleeve of high-temperature copper alloy extrusion machine that GH4169 material makes, the chemical composition of its GH4169 material and the weight percentage of each chemical composition as shown in table 1:
Table 1 unit: weight percentage
Heat treating method 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 vacuum heat treatment furnace, with the ramp to 950 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 720 DEG C and is incubated 10h, be chilled to 620 DEG C with the speed stove of 140 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is cooled to room temperature with 200 DEG C/h and is quickly cooled to room temperature afterwards, obtains the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine of the present embodiment.
By the present embodiment obtain the GH4169 liner die sleeve material being used for high-temperature copper alloy extrusion machine detect, its test item and detected result as follows:
1) detection of grain fineness number: testing method is for test 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, Materials Fracture that is will be made to need larger power.
2) test of high-temperature behavior: testing method is for test according to GB/T4338-1995; Test data and result are: former heat treating method of the prior art, and to obtain the test result of the high-temperature behavior of material as shown in table 2, the heat treating method of the present embodiment to obtain the test result of the high-temperature behavior of material as shown in table 3.
Table 2
Table 3
3) test in die sleeve work-ing life: actually use turnout contrast to test, its test result is as shown in table 4:
Table 4
Embodiment 2
The liner die sleeve of high-temperature copper alloy extrusion machine that GH4169 material makes, the chemical composition of its GH4169 material and the weight percentage of each chemical composition as shown in table 5:
Table 5 unit: weight percentage
Heat treating method 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 vacuum heat treatment furnace, with the ramp to 960 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 710 DEG C and is incubated 10h, be chilled to 610 DEG C with the speed stove of 150 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is cooled to room temperature with 200 DEG C/h and is quickly cooled to room temperature afterwards, obtains the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine of the present embodiment.
By the present embodiment obtain the GH4169 liner die sleeve material being used for high-temperature copper alloy extrusion machine detect, its test item and detected result as follows:
1) detection of grain fineness number: testing method is for test 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, Materials Fracture that is will be made to need larger power.
2) test of high-temperature behavior: testing method is for test according to GB/T4338-1995; Test data and result are: former heat treating method of the prior art, and to obtain the test result of the high-temperature behavior of material as shown in table 2, the heat treating method of the present embodiment to obtain the test result of the high-temperature behavior of material as shown in table 6.
Table 6
3) test in die sleeve work-ing life: actually use turnout contrast to test, consistent as shown in table 4 in embodiment 1 of its test result.
Embodiment 3
The liner die sleeve of high-temperature copper alloy extrusion machine that GH4169 material makes, the chemical composition of its GH4169 material and the weight percentage of each chemical composition as shown in table 7:
Table 7 unit: weight percentage
Heat treating method 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 vacuum heat treatment furnace, with the ramp to 940 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8x10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 730 DEG C and is incubated 10h, be chilled to 630 DEG C with the speed stove of 130 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is cooled to room temperature with 200 DEG C/h and is quickly cooled to room temperature afterwards, obtains the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine of the present embodiment.
By the present embodiment obtain the GH4169 liner die sleeve material being used for high-temperature copper alloy extrusion machine detect, its test item and detected result as follows:
1) detection of grain fineness number: testing method is for test 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, Materials Fracture that is will be made to need larger power.
2) test of high-temperature behavior: testing method is for test according to GB/T4338-1995; Test data and result are: former heat treating method of the prior art, and to obtain the test result of the high-temperature behavior of material as shown in table 2, the heat treating method of the present embodiment to obtain the test result of the high-temperature behavior of material as shown in table 8.
Table 8
3) test in die sleeve work-ing life: actually use turnout contrast to test, consistent as shown in table 4 in embodiment 1 of its test result.
The above; be 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 improve 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 made when utilizing disclosed above technology contents, the equivalent variations of modifying and developing, be Equivalent embodiments of the present invention; Meanwhile, all according to substantial technological of the present invention to the change of any equivalent variations that above-described embodiment is done, modify and differentiation, all still belong in the scope of technical scheme of the present invention.
Claims (6)
1., for a heat treating method for the GH4169 liner die sleeve of high-temperature copper alloy extrusion machine, comprise the steps:
(1) the copper alloy extrusion machine liner die sleeve that GH4169 material makes is placed in vacuum heat treatment furnace, to be not more than ramp to 940 ~ 960 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8 × 10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 710 ~ 730 DEG C and is incubated 10h, be chilled to 610 ~ 630 DEG C with the speed stove of 130 ~ 150 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described GH4169 liner die sleeve for high-temperature copper alloy extrusion machine.
2. the heat treating method of the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine according to claim 1, is characterized in that, the heat treating method of the described GH4169 liner die sleeve for high-temperature copper alloy extrusion machine, comprises the steps:
(1) the GH4169 liner die sleeve of the copper alloy extrusion machine made by GH4169 material is placed in vacuum heat treatment furnace, and with the ramp to 950 DEG C of 100 DEG C/h, be incubated 40 minutes, the tenuity factor of wherein said vacuum heat treatment furnace is 8 × 10
-5pa;
(2) the GH4169 liner die sleeve of the copper alloy extrusion machine after insulation is cooled to the furnace 720 DEG C and is incubated 10h, be chilled to 620 DEG C with the speed stove of 140 DEG C/h again and be incubated 20 hours, then 350 DEG C are cooled to the furnace, inflated with nitrogen is quickly cooled to room temperature afterwards, obtains the described GH4169 liner die sleeve for high-temperature copper alloy extrusion machine.
3. the heat treating method of the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine according to claim 1 and 2, it is characterized in that, in step (2), the rate of cooling that described inflated with nitrogen cools fast is for be cooled to room temperature with 200 DEG C/h.
4. the heat treating method of the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine according to claim 1 and 2, is characterized in that, described GH4169 liner die sleeve, 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 GH4169 liner die sleeve for high-temperature copper alloy extrusion machine according to claim 4, is characterized in that, described GH4169 liner die sleeve, 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 GH4169 liner die sleeve for high-temperature copper alloy extrusion machine according to claim 1 and 2, is characterized in that, the GH4169 liner die sleeve for high-temperature copper alloy extrusion machine obtained can at the applied at elevated temperature of 650 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| JP2004256840A (en) * | 2003-02-24 | 2004-09-16 | Japan Steel Works Ltd:The | COMPOSITE REINFORCED TYPE Ni BASED SUPERALLOY, AND PRODUCTION METHOD THEREFOR |
| US7192496B2 (en) * | 2003-05-01 | 2007-03-20 | Ati Properties, Inc. | Methods of processing nickel-titanium alloys |
| JP4387331B2 (en) * | 2005-06-30 | 2009-12-16 | 株式会社日本製鋼所 | Ni-Fe base alloy and method for producing Ni-Fe base alloy material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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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. |