CN105219942A - A kind of method expanding distortion when controlling revolving parts thermal treatment - Google Patents
A kind of method expanding distortion when controlling revolving parts thermal treatment Download PDFInfo
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- CN105219942A CN105219942A CN201510684869.7A CN201510684869A CN105219942A CN 105219942 A CN105219942 A CN 105219942A CN 201510684869 A CN201510684869 A CN 201510684869A CN 105219942 A CN105219942 A CN 105219942A
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- China
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- revolving parts
- frock
- ring steel
- steel belt
- heat treatment
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Abstract
The invention discloses a kind of method expanding distortion when controlling revolving parts thermal treatment, it comprises the steps: the material determining described revolving parts, according to the heat treatment process parameter of described material determination revolving parts; Measure the Outside Dimensions of described revolving parts, according to described Outside Dimensions, utilize experimental formula to calculate frock size, then make frock; Described frock be fixed on after on revolving parts, heating is heat-treated, and after reaching the solid melting temperatur of revolving parts material, frock is taken out together with revolving parts, disassembling fixture, takes out part.Beneficial effect of the present invention is: enter stokehold at part, install heat treatment tooling at periphery of part, the expansion of limit feature in heat treatment process, ensures its phenomenon that there will not be ovalization in heat-processed, free shrink in process of cooling, still keeps original size.
Description
Technical field
What the present invention relates to is a kind of method controlling to be out of shape in solid of revolution heat treatment process, specifically for large revolving body part, utilizes the expansion of outside frock limit feature in heat treatment process, thus ensures accessory size.
Background technology
Compared with ferrous materials, cast aluminium alloy has that volume mass is little, specific tenacity is high, corrosion stability is good, machinability is good and the feature such as castability is excellent.In order to alleviate structural weight on product, improve product use properties, increasing component have employed light material, and the application in space flight and aviation of aluminium alloy, magnesium alloy is more and more extensive, and large aluminum alloy, magnesium alloy parts demand are also increasing.Because large aluminum alloy casting dimension is large, inhomogeneity of wall thickness is even, complex-shaped, and its thermal treatment has singularity and complicacy, easily produces the heat treating faults such as mechanical property is defective, distortion, crackle.Therefore, the size control for large aluminum alloy, magnesium alloy parts also becomes more and more important, the distortion especially in heat treatment process.
At present, due to the widespread use of large-scale magnesium alloy, aluminum alloy part, the Deformation control in part heat treatment process has received increasing concern.Find by prior art documents, Li Xiaodong, the people such as Wu Xuhui are at " Sichuan war industry's journal ", write articles " large aluminum alloy heat treating castings Deformation control ", the document is for certain type cannon large aluminum alloy heat treating castings distortion problems of too, actual in conjunction with production, by on the analysis and the heat treatment process test that affect heat treatment deformation various factors, adopt adjustment heat treatment process parameter, heat treatment process is controlled, improve parts fixation disposing way, use the methods such as correction means, the heat treatment deformation of large aluminum alloy foundry goods is made to obtain effective control.The people such as Li Xiaodong are mainly by adjustment alloy heat treatment process parameter (temperature uniformity, quenching water temperature etc.) and improvement parts fixation disposing way (keep flat, place vertically, bundle) constantly adjust, induction and conclusion, within the specific limits by the deformation amount controlling of part in heat treatment process finally.But this method also has its defect, higher to equipment requirements, for dissimilar part, need the process debugging carrying out identical flow process, the production cycle is very long, and it is many that debugging expends part.Our unit mainly produces large revolving body cabin body part, and its problem on deformation in heat treatment process is serious, often causes accessory size overproof, can not use, but method above be not suitable for the large revolving body cabin body part being applied in different size.Therefore, the problem its heat treatment deformation controlled become nowadays and later development must faced by a difficult problem.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of method for controlling heat treatment deformation being directed to large revolving body cabin body part is provided.Enter stokehold at part, install heat treatment tooling at periphery of part, the expansion of limit feature in heat treatment process, ensure its phenomenon that there will not be ovalization in heat-processed, free shrink in process of cooling, still keeps original size.
The object of the invention is to be achieved through the following technical solutions:
Expand a method for distortion when controlling revolving parts thermal treatment, it comprises the steps:
Determine the material of described revolving parts, according to the heat treatment process parameter of described material determination revolving parts;
Measure the Outside Dimensions of described revolving parts, according to described Outside Dimensions, utilize experimental formula to calculate frock size, then make frock;
Described frock be fixed on after on revolving parts, heating is heat-treated, and after described thermal treatment completes, frock is taken out together with revolving parts, treats that temperature reduces to room temperature, disassembling fixture, takes out part;
Wherein, described heat treatment process parameter comprises solid melting temperatur, and described frock comprises the some ring steel belts be set in outside revolving parts and the buckle be fixed described ring steel belt, and described experimental formula is:
d
1＝D
1×λ
1×T×M
d
2＝D
1×λ
2×T
D
2＝d
1+D
1-d
2
Wherein: d
1for dilation dimension under revolving parts solid solubility temperature; D
1for revolving parts places ring steel belt position outside dimension; λ
1for the revolving parts coefficient of expansion; T is revolving parts solid solubility temperature; M is adjustment factor; d
2for dilation dimension under ring steel belt solid solubility temperature; λ
2for the coefficient of expansion of ring steel belt; D
2for the internal diameter size of corresponding ring steel belt.
Preferably, described Outside Dimensions comprises the upper end diameter of revolving parts, lower end diameter, highly.
Preferably, the internal diameter of described ring steel belt is calculate gained through experimental formula, slightly larger than the diameter of revolving parts corresponding position, accurately can limit the ovalization of solid of revolution in solid solution process and expand.
The present invention has following beneficial effect: enter stokehold at part, install heat treatment tooling at periphery of part, the expansion of limit feature in heat treatment process, ensures its phenomenon that there will not be ovalization in heat-processed, free shrink in process of cooling, still keeps original size.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is that in the present invention, frock is arranged on the side-view on revolving parts;
In figure: 1, revolving parts; 2, ring steel belt; 3, buckle.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
A kind of method expanding distortion when controlling revolving parts thermal treatment provided by the invention, it comprises the steps:
Determine the material of described revolving parts, according to the heat treatment process parameter of described material determination revolving parts, mainly consolidate melting temperatur; Measure the Outside Dimensions such as the upper end diameter of described revolving parts, lower end diameter, height, according to these Outside Dimensions, utilize following experimental formula to calculate frock size, then make frock; This frock comprises ring steel belt, and to the buckle that described ring steel belt is fixed, described experimental formula is:
d
1＝D
1×λ
1×T×M
d
2＝D
1×λ
2×T
D
2＝d
1+D
1-d
2
In formula: d
1for dilation dimension under part solid solubility temperature; D
1for part outside dimension; λ
1for the part coefficient of expansion; T is part solid solubility temperature; M is adjustment factor; d
2for dilation dimension under frock solid solubility temperature; λ
2for the frock coefficient of expansion; D
2for corresponding frock internal diameter size.
By frock according to being fixed on shown in Fig. 1 after on revolving parts, heating is heat-treated, and after described thermal treatment completes, frock is taken out together with revolving parts, treats that temperature reduces to room temperature, disassembling fixture, takes out part.
Concrete installation method is: be first set on revolving parts 1 abreast by six ring steel belts 2, certainly, the quantity of ring steel belt is not limited to six, determine according to concrete revolving parts size, two ring steel belts of bottom install buckle 3 with bolt, then successively upwards, between every two ring steel belts 2, some buckles 3 are installed, thus the ring steel belt of every layer is fixed.
For the large revolving body cabin body part that a material is ZM6 alloy, its upper surface diameter 600mm, lower surface diameter 900mm, height 800mm, evenly (for 8mm), boss is few for inwall.Solid solution parameter is 530 DEG C × 14h.
Choosing ring steel belt material is No. 45 steel, considers frock weight and part height, frock is divided into 7 sections (being 7 ring steel belts).Pass through d
1=D
1× λ
1× T × M; d
2=D1 × λ
2× T; D
2=d
1+ D
1-d
2formulae discovery ring steel belt internal diameter.(wherein part material is ZM6, and its coefficient of expansion is λ
1=31 × 10
-6/ K, according to part wall thickness feature, getting its M value is 1.1, and ring steel belt material used is No. 45 steel, and its coefficient of expansion is λ
1=21 × 10
-6/ K, solid solubility temperature is 530 DEG C, is 803K.) to obtain data as shown in table 1.
The calculating (unit: mm) of table 1 heat treatment tooling internal diameter size
| D 1 | 600.00 | 646.88 | 693.75 | 740.63 | 787.50 | 834.38 | 881.25 |
| d 1 | 14.9 | 16.1 | 17.3 | 18.4 | 19.6 | 20.8 | 21.9 |
| d 2 | 10.1 | 10.9 | 11.7 | 12.5 | 13.3 | 14.1 | 14.9 |
| D 2 | 604.8 | 652.1 | 699.3 | 746.6 | 793.8 | 841.1 | 888.3 |
According to the data determination frock wall thickness in table 1 and ring steel belt height, according to ring steel belt internal diameter size design frock fixed form.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (3)
1. expand a method for distortion when controlling revolving parts thermal treatment, it is characterized in that, comprise the steps:
Determine the material of described revolving parts, according to the heat treatment process parameter of described material determination revolving parts;
Measure the Outside Dimensions of described revolving parts, according to described Outside Dimensions, utilize experimental formula to calculate frock size, then make frock;
Described frock be fixed on after on revolving parts, heating is heat-treated, and after described thermal treatment completes, frock is taken out together with revolving parts, treats that temperature reduces to room temperature, disassembling fixture, takes out part;
Wherein, described heat treatment process parameter comprises solid melting temperatur, and described frock comprises the some ring steel belts be set in outside revolving parts and the buckle be fixed described ring steel belt, and described experimental formula is:
d
1＝D
1×λ
1×T×M
d
2＝D
1×λ
2×T
D
2＝d
1+D
1-d
2
In formula: d
1for dilation dimension under revolving parts solid solubility temperature; D
1for revolving parts places ring steel belt position outside dimension; λ
1for the revolving parts coefficient of expansion; T is revolving parts solid solubility temperature; M is adjustment factor; d
2for dilation dimension under ring steel belt solid solubility temperature; λ
2for the coefficient of expansion of ring steel belt; D
2for the internal diameter size of corresponding ring steel belt.
2. the as claimed in claim 1 method expanding distortion when controlling revolving parts thermal treatment, is characterized in that, described Outside Dimensions comprises the upper end diameter of revolving parts, lower end diameter, highly.
3. during control revolving parts thermal treatment as claimed in claim 1, expand the method for distortion, it is characterized in that, the internal diameter of described ring steel belt is calculate gained through experimental formula, slightly larger than the diameter of revolving parts corresponding position, accurately can limit the ovalization of solid of revolution in solid solution process and expand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684869.7A CN105219942B (en) | 2015-08-18 | 2015-10-20 | A method of expanding deformation when control revolving parts heat treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508246 | 2015-08-18 | ||
| CN2015105082464 | 2015-08-18 | ||
| CN201510684869.7A CN105219942B (en) | 2015-08-18 | 2015-10-20 | A method of expanding deformation when control revolving parts heat treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105219942A true CN105219942A (en) | 2016-01-06 |
| CN105219942B CN105219942B (en) | 2018-08-31 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007254824A (en) * | 2006-03-23 | 2007-10-04 | Hitachi Metals Ltd | Fixture and heat treatment method of core |
| CN101733320A (en) * | 2008-11-11 | 2010-06-16 | 贵州红林机械有限公司 | Seamless treatment technology for edge of cast-iron piston ring |
| CN201825989U (en) * | 2010-09-30 | 2011-05-11 | 成都飞机工业（集团）有限责任公司 | Jig for controlling heat treatment deformation |
| CN202450119U (en) * | 2011-12-27 | 2012-09-26 | 上海锅炉厂有限公司 | Tool for preventing cylinder body with opening from being deformed during heat treatment |
| CN103643014A (en) * | 2013-11-21 | 2014-03-19 | 成都发动机（集团）有限公司 | Shape correction method for aeroengine support front sealing component matrix inner ring |
| CN104651857A (en) * | 2015-02-09 | 2015-05-27 | 南车戚墅堰机车车辆工艺研究所有限公司 | Carburizing and quenching deformation control method for gears of large-sized heavy-load locomotive |
-
2015
- 2015-10-20 CN CN201510684869.7A patent/CN105219942B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007254824A (en) * | 2006-03-23 | 2007-10-04 | Hitachi Metals Ltd | Fixture and heat treatment method of core |
| CN101733320A (en) * | 2008-11-11 | 2010-06-16 | 贵州红林机械有限公司 | Seamless treatment technology for edge of cast-iron piston ring |
| CN201825989U (en) * | 2010-09-30 | 2011-05-11 | 成都飞机工业（集团）有限责任公司 | Jig for controlling heat treatment deformation |
| CN202450119U (en) * | 2011-12-27 | 2012-09-26 | 上海锅炉厂有限公司 | Tool for preventing cylinder body with opening from being deformed during heat treatment |
| CN103643014A (en) * | 2013-11-21 | 2014-03-19 | 成都发动机（集团）有限公司 | Shape correction method for aeroengine support front sealing component matrix inner ring |
| CN104651857A (en) * | 2015-02-09 | 2015-05-27 | 南车戚墅堰机车车辆工艺研究所有限公司 | Carburizing and quenching deformation control method for gears of large-sized heavy-load locomotive |
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| Publication number | Publication date |
|---|---|
| CN105219942B (en) | 2018-08-31 |
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