CN104975156A - Cryogenic treatment method - Google Patents
Cryogenic treatment method Download PDFInfo
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- CN104975156A CN104975156A CN201410139315.4A CN201410139315A CN104975156A CN 104975156 A CN104975156 A CN 104975156A CN 201410139315 A CN201410139315 A CN 201410139315A CN 104975156 A CN104975156 A CN 104975156A
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Abstract
The invention discloses a cryogenic treatment method, comprising a protection step, a cooling step and a take-out step, wherein the protection step is to form a protection layer for isolating a workpiece from the outside on the outer surface of the workpiece, the protection layer is combined with the workpiece to form a treated piece, and the protection layer is a bubbled film; the cooling step is to cool the treated piece to a required first temperature; the take-out step follows the cooling step, and is to remove the protection layer of the treated piece to obtain the workpiece. The protection layer tightly covers the workpiece in the cooling step to prevent the workpiece from being broken or damaged by rapid cooling, so that the product yield is improved, the production cost is reduced and the production efficiency is improved.
Description
Technical field
The present invention relates to a kind of temperature treatment method, particularly relate to a kind of cryogenic treating process.
Background technology
The mechanical properties improving metal works is commonly used in sub-zero treatment, and current sub-zero treatment technology is widely used in the workpiece made with steel as cutter, mould or foundry goods etc.Sub-zero treatment technology can be divided into general sub-zero treatment and cryogenic treatment according to the difference for the treatment of temp, wherein cryogenic treatment mode is to ultra low temperature by workpiece fast cooling, such as: workpiece is placed in liquid nitrogen (-196 DEG C), process by very low temperature makes austenite residual in steel workpiece almost be transformed into abampere completely, eliminate metal inside stress, carbide precipitate, and stable material weave construction etc.Because austenite content is more, the hardness of steel workpiece is lower, and can reduce the residual of austenite in steel workpiece by sub-zero treatment technology, for having in this field, this knows that the knowledgeable can understand usually, no longer repeated in this.
Although the material behavior of workpiece can be improved by cryogenic treatment, because in instantaneous temperature reduction process and directly contact liquid nitrogen may cause workpiece surface produce some slight cracks or workpiece distortion itself or break, increase product fraction defective.And existing liquid nitrogen gasification cooling method, workpiece can be made directly not contact liquid nitrogen, through liquid nitrogen vaporization or atomization low temperature environment in, by gentle for workpiece cooling, workpiece surface can be avoided to produce slight crack, but this mode is lowered the temperature, the treatment time is longer, causes production cost to improve.
Summary of the invention
The object of the present invention is to provide a kind of cryogenic treating process improving workpiece yield.
Cryogenic treating process of the present invention, comprises a protection step, a cooling step, and one takes out step.This protection step the outside surface of a workpiece is arranged a protective layer that this workpiece is hedged off from the outer world, and this protective layer becomes a handling member in conjunction with this workpiece, and this protective layer is a bubble film.This cooling step this handling member is cooled to one first required temperature.This taking-up step is after being connected in this cooling step, is removed by the protective layer of this handling member and obtain this workpiece.
Preferably, aforementioned cryogenic treating process, wherein in this cooling step, is first cooled to this first temperature by the sequentially segmentation of this handling member, and this first temperature is less than subzero 100 degree Celsius.
Preferably, aforementioned cryogenic treating process, wherein in this taking-up step, first heats this handling member, then is removed by this protective layer and obtain this workpiece.
Preferably, aforementioned cryogenic treating process, wherein also comprises the tempering step that is connected in this taking-up step, in this tempering step, first cools after this workpiece heat again.
Preferably, aforementioned cryogenic treating process, wherein in this cooling step, in this cooling step, its segmentation cooling method is that the liquid this handling member sequentially being put into differing temps is lowered the temperature.
Beneficial effect of the present invention is: coated this workpiece closely sealed of this protective layer and in this cooling step; contribute to protecting this workpiece; avoid this workpiece to cause because of fast cooling this workpiece break or damage, and increase product yield and reduce production cost, and enhance productivity.
Accompanying drawing explanation
Fig. 1 is a schema, and the first preferred embodiment of cryogenic treating process of the present invention is described;
Fig. 2 is a schematic diagram, and a protection step of this first preferred embodiment is described;
Fig. 3 is a schematic diagram, and a cooling step of this first preferred embodiment is described;
Fig. 4 is a schematic diagram, and a tempering step of this first preferred embodiment is described;
Fig. 5 is a schematic diagram, and a protection step of the second preferred embodiment of cryogenic treating process of the present invention is described;
Fig. 6 is a schematic diagram, and a cooling step of this second preferred embodiment is described;
Fig. 7 is a schematic diagram, illustrates that one of this second preferred embodiment takes out step;
Fig. 8 is a schematic diagram, and a tempering step of this second preferred embodiment is described;
Fig. 9 to Figure 13 is all schematic diagram, illustrates that a cooling step of the 3rd preferred embodiment is; And
Figure 14 is a schematic diagram, and a tempering step of the 3rd preferred embodiment is described.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Consulting Fig. 1, is the first preferred embodiment of cryogenic treating process of the present invention, comprises a protection step 1, a cooling step 2, takes out step 3, and a tempering step 4.
Consult Fig. 1 and Fig. 2, first perform this protection step 1, first the outside surface of a pending workpiece 11 is arranged a protective layer 12, and this protective layer 12 becomes a handling member 13 in conjunction with this workpiece 11.In this preferred embodiment, this protective layer 12 is the aspect of bubble film, but not as limit, as long as coatedly can be formed airtight again by complete for this workpiece 11, and can reach this protective layer 12 by the coated protection of this workpiece 11 this workpiece 11 is hedged off from the outer world.
Consult Fig. 1 and Fig. 3, in this cooling step 2, be that this handling member 13 is cooled to one first required temperature, this first temperature is the temperature (-196 DEG C) of a liquid nitrogen 21, performs this taking-up step 3 through this handling member 13 directly being put into this liquid nitrogen 21 and placing after four hours.Then, in this taking-up step 3, this handling member 13 is put into and leaves standstill 30 minutes in boiling water, then this protective layer 12 is removed and obtains this workpiece 11.Then as shown in Fig. 1,4, in this tempering step 4, this workpiece 11 to be directly placed in boiling water and to continue to boil two hours, then this workpiece 11 is taken out being placed in naturally cooling in room temperature environment.
Consulting Fig. 1 and Fig. 3 again, by closely sealed this workpiece 11 coated of this protective layer 12, avoiding this workpiece 11 to cause this workpiece 11 break or damage because directly contacting this liquid nitrogen 21.In this preferred embodiment; can merge with this tempering step 4 in this taking-up step 3 and perform; such as: this handling member 13 is put into boiling water and continues to boil to required time; again this protective layer 12 is removed and take out this workpiece 11 and be placed in naturally cooling in room temperature environment, can consider according to the demand of the fluency of Production Flow Chart and product and perform.Be noted that, this cooling step 2 this handling member 13 is put into this liquid nitrogen 21 lower the temperature, in follow-up described preferred embodiment, this first temperature is all the temperature of this liquid nitrogen 21, but not as limit, can according to the temperature of actual required cooling, this handling member 13 this handling member 13 is positioned in such as liquid alcohol or other cryogenic liquid and lowers the temperature, as long as can reach required cooling-down effect.
Consult Fig. 1 and Fig. 5; for the second preferred embodiment of cryogenic treating process of the present invention; roughly identical with this first preferred embodiment; different places is: be first placed in first liquid by this workpiece 11 with multiple strut member 14 in this protection step 1; again first liquid condensed into solid-state shape and form this protective layer 12; and in the process of solidifying, this workpiece 11 first carries out the gentle cooling of first stage.Now closely sealed coated this workpiece 11 of this protective layer 12 and this strut member 14 and become this handling member 13.In this preferred embodiment; first liquid is water; conveniently to obtain and with low cost; and in environment below zero centigrade; make water this workpiece 11 coated with this strut member 14 and freeze into ice, this handling member 13 can be obtained, but not as limit; first liquid can be oily liquid or other liquid, as long as can be formed this workpiece 11 and the closely sealed coated protective layer 12 of this strut member 14.Described strut member 14 is metal material, but not as limit, can select applicable material according to actual manufacture demand.
Then this cooling step 2, this taking-up step 3 is equally sequentially performed, and this tempering step 4.Consult Fig. 1 and Fig. 6, in this cooling step 2, this handling member 13 is directly put into this liquid nitrogen 21 and place after four hours and perform this taking-up step 3.In this preferred embodiment, also can add in first liquid and fall subzero additive, such as: sodium-chlor can reduce the zero pour of water, the zero pour of general saturated brine is greatly about subzero 20 degree Celsius, as this workpiece 11 is placed in saturated brine with multiple strut member 14, and saturated brine is freezed, this workpiece 11 is then made tentatively to lower the temperature in this protection step 1, therefore in this cooling step 2, this handling member 13 only needs to be positioned in this liquid nitrogen 21 two hours can reach required cooling-down effect, and this taking-up step 3 of execution that can continue, effective saving substrate processing time.The kind of aforementioned additive but be not limited with person disclosed by this preferred embodiment, can add other on demand in order to fall subzero additive.
In this taking-up step 3, this handling member 13 is put in boiling water, and make this first liquid frozen melt and obtain this workpiece 11 as shown in Figure 7.Consult Fig. 1 and Fig. 8, then in this tempering step 4, this workpiece 11 to be directly placed in boiling water and to continue to boil two hours, then this workpiece 11 is taken out put naturally cooling in room temperature environment.In this preferred embodiment, in this tempering step 4, this workpiece 11 is placed in boiling water and heats, but not as limit, also this workpiece 11 can be placed in as heated in edible wet goods oily liquid.About more than 200 DEG C of general edible oil boiling point, can be heated to 150 DEG C by edible oil and hold temperature take out after 1 hour in this tempering step 4.This taking-up step 3 equally also can merge execution with this tempering step 4 as described in this first preferred embodiment, repeats no more.
Consult Fig. 1 and Fig. 6 again; freeze into solid-state by first liquid this workpiece 11 coated with this strut member 14 and form this protective layer 12; and through in the process of solidifying at first liquid; this workpiece 11 first carries out the gentle cooling of first stage; reduce the follow-up risk because workpiece 11 may be caused in the process of fast cooling to be out of shape; and also first can add in first liquid and fall subzero additive, shorten temperature fall time.Then in this cooling step 2, this protective layer 12 causes this workpiece 11 break or damage except avoiding this workpiece 11 because directly contacting this liquid nitrogen 21, is also hard solid-state structure through this protective layer 12, helps avoid this workpiece 11 fast cooling and be out of shape.Moreover described strut member 14 has the effect of the structure of this protective layer 12 assisted and strengthened, also can assist change this protective layer 12 heat-conduction coefficient and relax this workpiece 11 cooling effect.
Consult Fig. 1 and Fig. 9, for the 3rd preferred embodiment of cryogenic treating process of the present invention, roughly identical with this second preferred embodiment, different places is: be utilize segmentation cooling method to be lowered the temperature by the liquid that this handling member 13 sequentially puts into differing temps in this cooling step 2.As described in this second preferred embodiment, first liquid condenses into solid-state shape and forms this protective layer 12, first carries out the gentle cooling of first stage in the process of solidifying.In this cooling step 2, first this handling member 13 put into the liquid of one second temperature and leave standstill 30 minutes, carrying out subordinate phase cooling.Then, as shown in Figure 10, put into the liquid of one the 3rd temperature and leave standstill 30 minutes, carrying out phase III cooling.Come as shown in figure 11 again, put into the liquid of one the 4th temperature and leave standstill 30 minutes, carrying out fourth stage cooling.Further, as shown in figure 12, this handling member 13 is put into one the 5th temperature liquid and leave standstill 30 minutes, carry out five-stage cooling, finally as shown in figure 13, put into a liquid nitrogen 21 and leave standstill complete this cooling step 2 after 30 minutes.In this preferred embodiment, the liquid used in this subordinate phase to this five-stage segmentation cooling is neither identical, zero pour through different liqs is not identical, the cooling-down effect of Different hypothermia can be reached, but not as limit, also can use all identical liquid, as long as make described liquid respectively in different temperature, and this workpiece 11 can be reached the effect of segmentation cooling.
Consult Fig. 1 and Figure 13, to complete after this cooling step 2 and in this taking-up step 3, this handling member 13 to be placed in room temperature environment and this protective layer 12 to be melted voluntarily and obtains this workpiece 11.In this tempering step 4, as shown in figure 14, then this workpiece 11 put into oil and be heated to 150 DEG C and hold temperature one hour, finally again this workpiece 11 being taken out and put naturally cooling in room temperature environment.
Consult Fig. 1 and Figure 13; except can reach the effect of buffering cooling and protection through this protective layer 12; and carry out segmentation cooling by the liquid that this handling member 13 is sequentially put into differing temps; make the gentle cooling of this workpiece 11, more help avoid this workpiece 11 because of moment fast cooling and break or damage.And utilize the liquid that this handling member 13 sequentially puts into differing temps is lowered the temperature, manner of execution is simple and be convenient to continuous seepage operation, and can be applicable to perform in this first preferred embodiment and this second preferred embodiment.And the mode of wise temperature process, can be applicable to need, in the Temperature Treatment of intensification, such as: the liquid sequentially putting into differing temps heats up, can different Production requirement be complied with, utilize the method for wise temperature process to perform.
In sum; cryogenic treating process of the present invention; by coated this workpiece 11 closely sealed of this protective layer 12 in cooling step 2; avoid this workpiece 11 because of moment fast cooling and cause this workpiece 11 break or damage, and this protective layer 12 contribute to reinforcement fixes this workpiece 11 and avoid crossing because of fast cooling causing this workpiece 11 to be out of shape.
Claims (5)
1. a cryogenic treating process, comprise a cooling step, this cooling step is that a pending workpiece is cooled to required first temperature, it is characterized in that: also comprise one be executed in this cooling step before protection step, and one is connected in the taking-up step after this cooling step, this protection step is that the outside surface of this workpiece is arranged a protective layer that this workpiece is hedged off from the outer world, this protective layer becomes a handling member in conjunction with this workpiece, this protective layer is a bubble film, this taking-up step is removed by the protective layer of this handling member and obtains this workpiece.
2. cryogenic treating process according to claim 1, is characterized in that: in this cooling step, first the sequentially segmentation of this handling member is cooled to this first temperature, and this first temperature is less than subzero 100 degree Celsius.
3. cryogenic treating process according to claim 2, is characterized in that: in this taking-up step, first this handling member heated, then removed by this protective layer and obtain this workpiece.
4. cryogenic treating process according to claim 3, is characterized in that: also comprise the tempering step that is connected in this taking-up step, in this tempering step, first cools after this workpiece heat again.
5. cryogenic treating process according to claim 2, is characterized in that: in this cooling step, and its segmentation cooling method is that the liquid this handling member sequentially being put into differing temps is lowered the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139315.4A CN104975156A (en) | 2014-04-09 | 2014-04-09 | Cryogenic treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410139315.4A CN104975156A (en) | 2014-04-09 | 2014-04-09 | Cryogenic treatment method |
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| CN104975156A true CN104975156A (en) | 2015-10-14 |
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| CN201410139315.4A Pending CN104975156A (en) | 2014-04-09 | 2014-04-09 | Cryogenic treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425341A (en) * | 2016-07-20 | 2017-02-22 | 昆山华都精工机械设备有限公司 | Boring shaft manufacturing method |
| CN116560327A (en) * | 2023-07-07 | 2023-08-08 | 深圳市百思泰科技有限公司 | Electric tool production control method and system based on Internet of things |
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| US3891477A (en) * | 1971-09-09 | 1975-06-24 | Mangrove Enterprise Inc | Material treatment by cryogenic cooling |
| CN1435505A (en) * | 2002-01-30 | 2003-08-13 | 天津大学 | Method for cryogenic treatment of galvanized steel sheet resistance spot welding electrode |
| CN102127624A (en) * | 2011-02-28 | 2011-07-20 | 英利能源（中国）有限公司 | Cryogenic treatment method and device for steel wire for cutting solar cell silicon chip |
| CN103276327A (en) * | 2013-04-28 | 2013-09-04 | 南昌大学 | Method for deep cooling extruded magnesium-zinc magnesium alloy |
| CN103667644A (en) * | 2012-09-11 | 2014-03-26 | 财团法人金属工业研究发展中心 | Subzero treatment method and manufacturing method of outer casing thereof |
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2014
- 2014-04-09 CN CN201410139315.4A patent/CN104975156A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3891477A (en) * | 1971-09-09 | 1975-06-24 | Mangrove Enterprise Inc | Material treatment by cryogenic cooling |
| CN1435505A (en) * | 2002-01-30 | 2003-08-13 | 天津大学 | Method for cryogenic treatment of galvanized steel sheet resistance spot welding electrode |
| CN102127624A (en) * | 2011-02-28 | 2011-07-20 | 英利能源（中国）有限公司 | Cryogenic treatment method and device for steel wire for cutting solar cell silicon chip |
| CN103667644A (en) * | 2012-09-11 | 2014-03-26 | 财团法人金属工业研究发展中心 | Subzero treatment method and manufacturing method of outer casing thereof |
| CN103276327A (en) * | 2013-04-28 | 2013-09-04 | 南昌大学 | Method for deep cooling extruded magnesium-zinc magnesium alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425341A (en) * | 2016-07-20 | 2017-02-22 | 昆山华都精工机械设备有限公司 | Boring shaft manufacturing method |
| CN116560327A (en) * | 2023-07-07 | 2023-08-08 | 深圳市百思泰科技有限公司 | Electric tool production control method and system based on Internet of things |
| CN116560327B (en) * | 2023-07-07 | 2023-09-19 | 深圳市百思泰科技有限公司 | Electric tool production control method and system based on Internet of things |
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