CN100404702C - Heat processing unit case heat treating method and its device - Google Patents
Heat processing unit case heat treating method and its device Download PDFInfo
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- CN100404702C CN100404702C CNB200510070931XA CN200510070931A CN100404702C CN 100404702 C CN100404702 C CN 100404702C CN B200510070931X A CNB200510070931X A CN B200510070931XA CN 200510070931 A CN200510070931 A CN 200510070931A CN 100404702 C CN100404702 C CN 100404702C
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Abstract
This invention provides a method for partially heat-treating a member to be heat-treated, which improves the quality of a heat-treated member, and to provide an apparatus therefor. The method for partially heat-treating only the particular part 1a of the member 1 to be heat-treated comprises an induction heating step 20P of induction-heating only the particular part, and a subsequent cooling step 30. The induction heating step 20P comprises charging n pieces (n is a natural number of 3 or more) of the members 1 to be heat-treated in one coil, and transporting each member to be heat-treated sequentially from the first heating position to an n-th heating position, to heat it over n times while beginning from the first heating 22(1) carried out at the first heating position and ending in the n-th heating 22(n) carried out at the n-th heating position. The partial heat treatment may be applied to partial quenching, to partial tempering, or to both of the partial quenching and the partial tempering.
Description
Technical field
The present invention relates to the case heat treating method and the device thereof of heat processing unit (implement thermal treatment and be used parts).
Heat processing unit for example is the link for endless track belt of building machinery, in this case, by the part of partial heat treatment, is roller roll extrusion face.In addition, partial heat treatment is any of selective hardening or localized tempering or selective hardening and localized tempering.
Background technology
As representational heat processing unit, as shown in figure 12 the grip-pad that uses on the crawler belt of building machineries such as hydraulic excavator and dozer 2, chain link 1, pin 3, lining 4 are arranged, and the blade tip (figure does not show) that on building machinery such as dozer and snow removing machinery, uses etc.For the facial 1a (Figure 13, Figure 14) of the roller roll extrusion of chain link 1, special requirement wear resistant.
Require characteristic in order to possess these, link for endless track belt, by the operation of following a～e, was made with the process sequence of a～e in the past.
A. the starting material forge hot that will constitute by medium carbon alloy steel and make the chain link starting material of chain link shape.
B. will utilize the afterheat of forge hot or reheat and reach Ac
3The whole quick cooling of the chain link starting material of transformation temperature or its above temperature is quenched.
C. the chain link starting material integral high-temperature tempering after will quenching.
D. only with the facial induction quenching (so-called selective hardening) of the raw-material roller roll extrusion of the chain link behind the high tempering.
E. only that the raw-material roller roll extrusion of chain link is facial by induction heating low-temperaturetempering (so-called localized tempering), perhaps, with chain link starting material integral body low-temperaturetempering in stove.
Thereby, on the chain link starting material, the thermal treatment in the 1st stage of enforcement b, c and the thermal treatment in these 2 stages of thermal treatment in the 2nd stage of d, e.The thermal treatment in the 1st stage is implemented " complete heat treatment " on the whole at the chain link starting material, and the thermal treatment in the 2nd stage is implemented " partial heat treatment " on the raw-material part of chain link.
The present invention relates to wherein " partial heat treatment ".
As the raw-material partial heat treatment of chain link, in the past, the induction heating method (for example, the spy opens clear 57-51583 communique) that is made of 1 operation was arranged.
But, in case heat treating method in the past, exist temperature head specific part, surface and core to become big, be difficult to specific part integral body is heated to the problem of uniform temperature.
As the method that addresses this problem, the method (spy who is proposed by the applicant is willing to 2003-154480) of Fig. 7, comparative example (because of unexposed, so do not belong to prior art) shown in Figure 8 is arranged.
The case heat treating method of the heat processing unit of this comparative example is in 1 coil, carries out 1) the 1st induction heating (operation 1), 2) mobile (operation 2), 3) the 2nd induction heating (operation 3), then, outside coil, carry out 4) cooling (operation 4) method, comprise 4 operations.In the method, have in the mobile process between the 1st induction heating and the 2nd induction heating, heat from the surface of specific part to the core transmission, the effect that the temperature head of surface and core diminishes.
But, in the method for above-mentioned comparative example, also exist in coil, can only handle the problem of 2 heat processing units, so expect the shortening of further heat treatment time, productive raising.
Patent documentation 1: the spy opens clear 57-51583 communique
The problem to be solved in the present invention, be the surface of specific part of the induction heating method that constitutes by 1 operation and the bigger problem of temperature head of core, and, be further shortening, the such problem of productive raising of heat treatment time of wanting to seek the method for above-mentioned comparative example.
Summary of the invention
The object of the present invention is to provide with the surface of the specific part of in the past the induction heating that constitutes by 1 operation and the temperature head of core and compare, can dwindle the surface of the specific part in the induction heating and the temperature head of core, compare with comparative example, can realize the case heat treating method and the device thereof of the heat processing unit of the shortening of heat treatment time, productive raising with the 1st, the 2nd this heating process of 2 sections.
Reach above-mentioned purpose by following the present invention.
(1) a kind of case heat treating method of heat processing unit, it is the case heat treating method of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned hot is handled, and comprises only with the induction heating operation of aforementioned specific part induction heating and the refrigerating work procedure that then carries out;
N is made as 3 or natural situation more than it under, in 1 coil, carry out aforementioned induction heating operation with n heating location from the 1st heating location to the n heating location;
In this induction heating operation, in 1 coil, put into n heat processing unit, each heat processing unit is carried to the n heating location in turn from the 1st heating location, the 1st be heated to the n heating of carrying out at the n heating location and carry out n time heating from what carry out at the 1st heating location.
(2) as the case heat treating method of (1) described heat processing unit, wherein make each heat processing unit stop and heating at each heating location.
(3) as the case heat treating method of (1) described heat processing unit, wherein, heat while each heat processing unit is moved at each heating location.
(4) as the case heat treating method of (1) described heat processing unit, wherein, during moving between the heating location, the energising of aforementioned 1 coil is closed at heat processing unit.
(5) as the case heat treating method of (1) described heat processing unit, wherein, during moving between the heating location, the energising of aforementioned 1 coil is opened at heat processing unit.
(6) as the case heat treating method of (1) described heat processing unit, wherein, in aforementioned refrigerating work procedure, with the certain position in the mass-impregnation of the aforementioned hot processing element cooling fluid in the cooling liquid bath and make it static, effusive cooling liquid flowing is ejected on the aforementioned specific part by spraying casing.
(7) as the case heat treating method of (1) described heat processing unit, wherein, the aforementioned hot processing element is a link for endless track belt.
(8) as the case heat treating method of (7) described heat processing unit, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
(9) as the case heat treating method of (1) described heat processing unit, wherein, it is selective hardening that aforementioned hot is handled.
(10) as the case heat treating method of (1) described heat processing unit, wherein, it is localized tempering that aforementioned hot is handled.
(11) as the case heat treating method of (1) described heat processing unit, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
(12) a kind of partial heat treatment device of heat processing unit, it is the partial heat treatment device of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned partial heat treatment device only comprises aforementioned specific part is carried out the induction heating device of induction heating and the heat processing unit that aforementioned specific part has been heated is carried out the refrigerative refrigerating unit;
Aforementioned induction heating device has 1 heater coil, this 1 heater coil, n is made as 3 or natural situation more than it under, have tactic n heating location from the 1st heating location to the n heating location.
(13) as the partial heat treatment device of (12) described heat processing unit, wherein, aforementioned refrigerating unit, possess the aforementioned hot processing element of will be carried and be immersed in the certain position in the cooling fluid of cooling in the liquid bath and make its immobilized roller path, and possess effusive cooling liquid flowing is ejected into injection casing on the aforementioned specific part.
(14) as the partial heat treatment device of (12) described heat processing unit, wherein, the aforementioned hot processing element is a link for endless track belt.
(15) as the partial heat treatment device of (14) described heat processing unit, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
(16) as the partial heat treatment device of (12) described heat processing unit, wherein, it is selective hardening that aforementioned hot is handled.
(17) as the partial heat treatment device of (12) described heat processing unit, wherein, it is localized tempering that aforementioned hot is handled.
(18) as the partial heat treatment device of (12) described heat processing unit, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
In the partial heat treatment device of the case heat treating method of above-mentioned (1) and above-mentioned (12), because in heating process, induction heating carries out with n time heating, and between heating location, be provided with the traveling time of heat processing unit, therefore at traveling time (in this traveling time, the energising of coil can be opened, also can keep closing) in, the heat on surface that only is present in specific part because of the heating before moving is to core thermal conduction, thereby the temperature head of surface and core reduces, and the specific part integral body of heat processing unit can be heated to uniform temperature.In addition, if with such the pining for dropping into energy 2 times add and be made as W of comparative example, then each the heating input energy in the 1st heating, the 2nd heating is W/2, relative therewith, in the present invention, because input energy of each heating of the 1st heating, the 2nd heating, n heating is W/n, and n is 3 or its above natural number, so the heating process time can be shortened to W/n from W/2, can improve productivity.
In the case heat treating method of above-mentioned (2)～(5), showed the various sample attitudes such as opening, close of the moving of heat processing unit, coil, but also can adopt the combination arbitrarily of these sample attitudes.
In the partial heat treatment device of the case heat treating method of above-mentioned (6) and above-mentioned (13), because in refrigerating work procedure, with the certain position in the mass-impregnation of the heat processing unit cooling fluid in the cooling liquid bath and make it static, by spraying casing effusive cooling liquid flowing is ejected on the aforementioned specific part, therefore can aim at specific part shower cooling liquid, the quality of heat processing unit is improved, and by enough cooling liquid flowings are ejected on the specific part, can be when guaranteeing enough cooling poweies, cooling is become evenly, can improve heat treated quality.
In the partial heat treatment device of the case heat treating method of above-mentioned (7), (8) and above-mentioned (14), (15), the present invention can be applicable to the roller roll extrusion face of link for endless track belt, thereby can obtain the raising of mechanical quality.
In the partial heat treatment device of the case heat treating method of above-mentioned (9)～(11) and above-mentioned (16)～(18), thermal treatment can be selective hardening, also can be localized tempering, can also be this two aspect of selective hardening and localized tempering.
Description of drawings
Fig. 1 is the process picture sheet of the case heat treating method of heat processing unit of the present invention.
Fig. 2 is the process picture sheet of the case heat treating method with heat processing unit of the present invention when being applicable to localized tempering.
Fig. 3 is the process picture sheet of the case heat treating method with heat processing unit of the present invention when being applicable to selective hardening.
Fig. 4 is the process picture sheet of the case heat treating method with heat processing unit of the present invention when being applicable to selective hardening and this two aspect of localized tempering.
Fig. 5 be the present invention (heating location is n, wherein n be 3 or its above natural number) the case heat treating method machine of heat processing unit and the side-view of device.
Fig. 6 shows in the present invention, the side-view of the situation that heat processing unit is moved between each heating location in turn.
Fig. 7 is the case heat treating method of heat processing unit of comparative example (heating location is 2) and the side-view of device thereof.
Fig. 8 is illustrated in the comparative example, the side-view of the situation that heat processing unit is moved between 2 heating locations in turn.
Fig. 9 be the case heat treating method of heat processing unit of the present invention and the device in, the orthographic plan of gripping unit and heater coil (from figure).
Figure 10 is the sectional view of part of the relevant cooling (figure has showed the refrigerative situation of quenching) of the case heat treating method and the device thereof of heat processing unit of the present invention.
Figure 11 is the drawing in side sectional elevation of the device of Figure 10.
Figure 12 is the stereographic map of a part of the crawler belt of building machinery.
Figure 13 is the front view of chain link among Figure 12.
Figure 14 is the side-view of chain link among Figure 12.
Label declaration
1 heat processing unit (for example, the link for endless track belt of building machinery)
1a specific part (for example, the roller roll extrusion face of the link for endless track belt of building machinery)
5 cooling liquid baths, 6 cooling fluids
7 spray casing 8 cooling liquid flowings
The running roller of 9 roller paths, 10 parts
11 heater coils, 12 gripping units
20 induction heating operations
The heating, heating that 20P had for the 1st stage intermittently, the induction heating operation of the present invention of the heating in the 2nd stage
The heating process that 20C is general
21 (1)～21 (n) the 1st～the n heating location
22 (1)～22 (n) the 1st～the n heating
Mobile (the moving heat radiation) of the heat processing unit between 23 the 1st～the n heating locations
30 refrigerating work procedures, 100 selective hardening operations
200 localized tempering operations
Embodiment
Below, the case heat treating method and the device thereof of heat processing unit of the present invention are described with reference to Fig. 1～Fig. 6 and Fig. 9～Figure 14 (Figure 12～Figure 14 is applicable to the explanation of conventional art).
As heat processing unit, be example with the link for endless track belt of building machinery.But heat processing unit is not limited to the link for endless track belt of building machinery.In addition, when heat processing unit 1 was the link for endless track belt 1 of building machinery, implementing heat treated specific part 1a was roller roll extrusion face.
The case heat treating method of heat processing unit of the present invention at first, is described.
As shown in Figure 1, the case heat treating method of heat processing unit of the present invention is a heat treated case heat treating method of specific part 1a with heat processing unit 1.
The case heat treating method of heat processing unit of the present invention only comprises the induction heating operation 20 of the specific part 1a induction heating of heat processing unit 1 and the refrigerating work procedure 30 that then carries out.In induction heating, by high frequency induction current only to specific part 1a local heating.
In induction heating operation 20, the induction heating operation of the inventive method is marked with label 20P, the induction heating operation of previous methods is marked with label 20C.
The induction heating operation 20P of method of the present invention carries out in 1 coil 11, this 1 heater coil 11, n heating location 21 till n being made as 3 or during natural number more than it, having from the 1st heating location 21 (1) to n heating location 21 (n).
In this induction heating operation 20P, in 1 coil 11, put into n heat processing unit, each heat processing unit 1 is carried to n heating location 21 (n) in turn from the 1st heating location 21 (1), thereby n times of carrying out from the 1st heating 22 (1) carried out at the 1st heating location to n heating 22 (n) that carry out in the n position heat 22.Between heating and heating, be the mobile process (traveling time) 23 of heat processing unit 1.
At each heating location 21 (1)～21 (n), can make each heat processing unit 1 stop to heat, perhaps, also can simultaneously make each heat processing unit 1 move one side and heat.
In addition, in the process that heat processing unit 1 moves between heating location, both the energising of 1 coil 11 can be closed, perhaps, also the energising of 1 coil 11 can be opened.
Secondly, in the traveling time 23 between the 1st heating the 22 (1) and the 2nd heating 22 (2), by from the near surface portion of specific part 1a to atmospheric heat radiation, with from the thermal conduction of the surface element of specific part 1a to the core of specific part 1a, make irregular will the minimizing of temperature of specific part 1a, can be with specific part 1a evenly heating.
Repeat above-mentioned heating, move, till n heating 22 (n).
Be equal to each other at each heating location 21 (1)～21 (n) heat-up time.Traveling time is equal to each other at each mobile process 23.
In addition, heating input energy is equal to each other at each heating location.If the full input energy of each heat processing unit is made as W, be W/n at the input energy of each heating location, be less than the W/2 of comparative example, with its pro rata, compare less in heat-up time of each heating location and heat-up time at each heating location of comparative example.
By n (n be 3 or its above natural number) section heating and the mobile heat radiation time between it, the irregular basically eliminate of the temperature of Cun Zaiing in the past, quenching hardness and tempered-hardness etc., the stay in grade of goods.In addition, also shorten to each section (heating in the heating in the 1st stage and the 2nd stage respectively) heat-up time in the degree below 50 seconds, heating intermittently also shortens to and is lower than about about 12 seconds, need not heat such 3～4 hours long processing of carrying out of tempering by stove.
When n heat processing unit 1 of 1 heater coil heating, the heating location 21 (1)～21 (n) of heat processing unit 1 in 1 heater coil 11 heated in turn.Be when (wherein I is that 1～n) heating is during 1 heat processing unit 1 at heating location 21 (i), at the next heat processing unit 1 of heating location 21 (i-1) heating, when making 1 heat processing unit 1 when heating location 21 (i) moves to heating location 21 (i+1), make next heat processing unit 1 move to the situation of heating location 21 (i) from heating location 21 (i-1).By doing like this, can make the productivity multiplication.That is, and compare with the example in the past of 1 heat processing unit of 1 coil heats, the available identical time is handled the heat processing unit 1. of n multiple amount
As shown in Figure 9, pine in the adding of specific part 1a of heat processing unit 1, heat processing unit 1 usefulness gripping unit 12 is fixing.By clamping, the position relation of load coil (being called heater coil or coil simply) 11 and heat processing unit 1 is fixing, can carry out the stable heating of specific part 1a.
At refrigerating work procedure 30, especially partial heat treatment be under the situation of selective hardening (wherein, partial heat treatment also goes for the situation of localized tempering), as Figure 10, shown in Figure 11, will be in the heating process 20 sensed integral body that is heated to specified temperature or the heat processing unit more than it 1 of specific part 1a only, the certain position that is immersed in the cooling fluid 6 in the cooling liquid bath 5 makes it static, keep this state and spray by the effusive cooling liquid flowing 8 of jet hole that sprays casing 7, cool off to specific part 1a.
When heat processing unit 1 be transported to be positioned at the cooling liquid bath 5 the top position these parts 1 of conveying roller path 9 a part running roller 10 above the time, with running roller 10 that whenever should a part and to spray casing 7 be unit, mechanically in the cooling fluid 6 of mass-impregnation in cooling liquid bath 5 with heat processing unit 1, moreover and, flow out a large amount of cooling fluids and be injected on the specific part 1a of heat processing unit 1 from 3 directions (about 2 directions and top) by spraying casing 7, cool off by dipping and liquid stream.After cooling finishes, make the position before heat processing unit 1 rises to this a part of running roller 10 and 7 declines of injection casing, then send.The cooling and send into whole operation of sending and undertaken by automatic control.
As the cooling fluid that is used to quench, water, water-soluble quenching liquid, wet goods are arranged, can use any one cooling fluid.From the cost aspect and the operating environment aspect, preferably make water.
By cooling off, when guaranteeing sufficient speed of cooling, can guarantee uniform cooling by dipping and liquid stream.By fully guaranteeing speed of cooling, can obtain necessary quality (quenching hardness, tempered-hardness etc.), and, even by making speed of cooling, can play the effect that prevents hardening crack.In addition, owing to the certain position that heat processing unit 1 is still in the cooling fluid of cooling off in the liquid bath 56 cools off, therefore compare with the method for cooling that heat processing unit 1 moves in the cooling liquid bath in process of cooling, can eliminate the interference of spraying casing 7 and heat processing unit 1, and can shorten the jet hole of injection casing 7 and the interval of heat processing unit 1, therefore flowing of spray liquid flow can not die down, can spray the liquid stream of enough speed, and can guarantee higher speed of cooling, therefore can obtain necessary quality.In addition, because heat processing unit 1 is cooled off still, therefore compare with the method for cooling that heat processing unit 1 is displaced in process of cooling in the cooling liquid bath, shortened the length on the throughput direction of heat processing unit 1 of cooling liquid bath 5, reduced equipment making expense, equipment operation cost.
Have the 1st heating 22 (1) of the present invention, move heat radiation 23, i heating 22 (i) (wherein I is the natural number of 2～n-1), move heat radiation 23, n heating 22 (n) (wherein n be 3 or its above natural number) the partial heat treatment of the present invention of heating process 20P, both gone for selective hardening (Fig. 3), perhaps also go for localized tempering (Fig. 2), perhaps can also be applicable to the both sides (Fig. 4) of selective hardening and localized tempering.
The case heat treating method of the present invention of Fig. 2 (local heating 20P of the present invention is applicable to the situation of tempered local heating) has selective hardening operation 100 and local tempering process 200.
Selective hardening operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20C of transformation temperature or its above temperature and maintenance will have only the sensed Ac of being heated to of specific part
3Certain position in the cooling fluid 6 of the mass-impregnation of the heat processing unit 1 of transformation temperature or its above temperature in cooling liquid bath 5 also makes its immobilized state, to the refrigerating work procedure 30 of specific part 1a injection by the effusive cooling liquid flowing 8 of jet hole that sprays casing 7.
Localized tempering operation 200, only comprise specific part 1a with heat processing unit 1 in atmosphere induction heating to about 200～300 ℃ sense temperature heating process 20P and refrigerating work procedure (both can be force cooling also can be naturally cooling) 30.The induction heating operation 20P of this localized tempering operation, have the 1st heating 22 (1), move heat radiation 23, i heating 22 (i) (wherein I is the natural number of 2～n-1), move heat radiation 23, n heating 22 (n) (wherein n be 3 or its above natural number).
The case heat treating method of the present invention of Fig. 3 (local heating 20P of the present invention is applicable to the situation of the local heating of quenching) has selective hardening operation 100 and local tempering process 200.
Selective hardening operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20P of transformation temperature or its above temperature and maintenance will have only the sensed Ac of being heated to of specific part
3Certain position in the cooling fluid 6 of the mass-impregnation of the heat processing unit 1 of the temperature that transformation temperature or its are above in cooling liquid bath 5 also makes its immobilized state, by the jet hole of injection casing 7 effusive cooling liquid flowing 8 is ejected into refrigerating work procedure 30 on the specific part 1a.The induction heating operation 20P of this selective hardening operation, have the 1st heating 22 (1), move heat radiation 23, i heating 22 (i) (wherein I is the natural number of 2～n-1), move heat radiation 23, n heating 22 (n) (wherein n be 3 or its above natural number).
Localized tempering operation 200, only comprise specific part 1a with heat processing unit 1 in atmosphere induction heating to about 200～300 ℃ sense temperature heating process 20C and refrigerating work procedure (both can be force cooling also can be naturally cooling) 30.
The case heat treating method of the present invention of Fig. 4 (local heating 20P of the present invention is applicable to the local heating of quenching and this two side's of tempered local heating situation) has selective hardening operation 100 and local tempering process 200.
Selective hardening operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20P of transformation temperature or its above temperature and maintenance will have only the sensed Ac of being heated to of specific part
3Certain position in the cooling fluid 6 of the mass-impregnation of the heat processing unit 1 of the temperature that transformation temperature or its are above in cooling liquid bath 5 also makes its immobilized state, by the jet hole of injection casing 7 effusive cooling liquid flowing 8 is ejected into refrigerating work procedure 30 on the specific part 1a.The induction heating operation 20P of this selective hardening operation, have the 1st heating 22 (1), move heat radiation 23, i heating 22 (i) (wherein I is the natural number of 2～n-1), move heat radiation 23, n heating 22 (n) (wherein n be 3 or its above natural number).
Localized tempering operation 200, only comprise specific part 1a with heat processing unit 1 in atmosphere induction heating to about 200～300 ℃ sense temperature heating process 20P and refrigerating work procedure (both can be force cooling also can be naturally cooling) 30.The induction heating operation 20P of this localized tempering operation, have the 1st heating 22 (1), move heat radiation 23, i heating 22 (i) (wherein I is the natural number of 2～n-1), move heat radiation 23, n heating 22 (n) (wherein n be 3 or its above natural number).
Secondly, with reference to Fig. 5～Figure 14 (still, because of Fig. 7, Fig. 8 are comparative examples, so be not included in the present invention) the partial heat treatment device of the present invention of implementing above-mentioned case heat treating method is described.
Partial heat treatment device of the present invention, it is the partial heat treatment device of only the specific part 1a of heat processing unit 1 being heat-treated, comprise that the heat processing unit 1 after only being heated with the induction heating device (load coil 11) of specific part 1a induction heating with to specific part 1a carries out refrigerative refrigerating unit 5～10.Induction heating device, have carry out the 1st heating 22 (1) in turn, move heat radiation 23, i heating 22 (i) (wherein I is the natural number of 2～n-1), move heat radiation 23, n heating 22 (n) (wherein n be 3 or its above natural number) 1 heater coil 11.
The partial heat treatment device can also possess in the heat-processed of the specific part 1a of heat processing unit 1 gripping unit 12 of stationary heat processing element 1.But, can not have gripping unit 12 yet.
1 heater coil 11 heating n heat processing unit 1 (Fig. 5).Between the heating location of heat processing unit 1, in the moving of 21 (1)～21 (n), can open energising, perhaps also can close to coil 11.
Refrigerating unit possesses the heat processing unit 1 that will be transferred and is immersed in the certain position in the cooling fluid of cooling off in the liquid bath 56 and makes its immobilized roller path 10.
Refrigerating unit possesses effusive cooling liquid flowing 8 is ejected into injection casing 7 on the specific part 1a of heat processing unit 1.
Partial heat treatment both can be a selective hardening, also can be localized tempering, can also be selective hardening and local tempered both sides.
Secondly, the case heat treating method of heat processing unit of the present invention and the action effect of device thereof are described.
Because induction heating carries out with n time heating, and between heating location 21 (1)～21 (n), be provided with the mobile process 23 of heat processing unit 1, therefore at traveling time (in this traveling time, the energising of coil 11 can be opened, also can keep closing) in, the heat that only is present in the surface of specific part 1a because of the heating before moving, core thermal conduction to specific part 1a, thereby the temperature head of the surface of specific part 1a and specific part 1a core reduces, and the specific part 1a integral body of heat processing unit 1 can be heated to uniform temperature.In addition, if with such the pining for dropping into energy 2 times add and be made as W of comparative example (Fig. 7, Fig. 8), then pining for dropping into energy in respectively adding of the 1st heating, the 2nd heating is W/2, relative therewith, in the present invention, because the input energy of each heating of the 1st heating, the 2nd heating, n heating is W/n, and n is 3 or its above natural number, reduce to W/n so drop into energy from W/2, can shorten heat-up time thus, and can improve productivity at each heating location.
At refrigerating work procedure, because with the certain position in the mass-impregnation of heat processing unit 1 cooling fluid in cooling liquid bath 5 and make it static, and will be ejected on the specific part 1a by spraying casing 7 effusive cooling liquid flowings, therefore can aim at specific part 1a shower cooling liquid, the heat treated quality of heat processing unit 1 is improved, by enough cooling liquid flowings are ejected on the specific part 1a, can be when guaranteeing enough cooling poweies, cooling is become evenly, and improve heat treated quality.
The present invention can be applicable to the roller roll extrusion face of link for endless track belt, thereby obtain the raising of the mechanical quality of link for endless track belt.
In this case, thermal treatment can be selective hardening, also can be localized tempering, can also be this two aspect of selective hardening and localized tempering.
Claims (18)
1. the case heat treating method of a heat processing unit, it is the case heat treating method of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned hot is handled, and comprises only with the induction heating operation of aforementioned specific part induction heating and the refrigerating work procedure that then carries out;
N is made as 3 or natural situation more than it under, in 1 coil, carry out aforementioned induction heating operation with n heating location from the 1st heating location to the n heating location;
In this induction heating operation, in 1 coil, put into n heat processing unit, each heat processing unit is carried to the n heating location in turn from the 1st heating location, the 1st be heated to the n heating of carrying out at the n heating location and carry out n time heating from what carry out at the 1st heating location.
2. the case heat treating method of heat processing unit as claimed in claim 1 wherein, makes each heat processing unit stop and heating at each heating location.
3. the case heat treating method of heat processing unit as claimed in claim 1 wherein, heats while at each heating location each heat processing unit is moved.
4. the case heat treating method of heat processing unit as claimed in claim 1 wherein, in the process that heat processing unit moves between heating location, is closed the energising of aforementioned 1 coil.
5. the case heat treating method of heat processing unit as claimed in claim 1 wherein, in heat processing unit moves between heating location, is opened the energising of aforementioned 1 coil.
6. the case heat treating method of heat processing unit as claimed in claim 1, wherein, in aforementioned refrigerating work procedure, with the certain position in the mass-impregnation of the aforementioned hot processing element cooling fluid in the cooling liquid bath and make it static, spray by spraying the effusive cooling liquid flowing of casing to aforementioned specific part.
7. the case heat treating method of heat processing unit as claimed in claim 1, wherein, the aforementioned hot processing element is a link for endless track belt.
8. the case heat treating method of heat processing unit as claimed in claim 7, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
9. the case heat treating method of heat processing unit as claimed in claim 1, wherein, it is selective hardening that aforementioned hot is handled.
10. the case heat treating method of heat processing unit as claimed in claim 1, wherein, it is localized tempering that aforementioned hot is handled.
11. the case heat treating method of heat processing unit as claimed in claim 1, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
12. the partial heat treatment device of a heat processing unit, it is the partial heat treatment device of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned partial heat treatment device only comprises with the induction heating device of aforementioned specific part induction heating with to the heat processing unit that aforementioned specific part has been heated and carries out the refrigerative refrigerating unit;
Aforementioned induction heating device has 1 heater coil, this 1 heater coil, n is made as 3 or natural situation more than it under, have tactic n heating location from the 1st heating location to the n heating location.
13. the partial heat treatment device of heat processing unit as claimed in claim 12, wherein, aforementioned refrigerating unit, possess the aforementioned hot processing element of will be carried and be immersed in the certain position in the cooling fluid of cooling in the liquid bath and make its immobilized roller path, and possess effusive cooling liquid flowing is ejected into injection casing on the aforementioned specific part.
14. the partial heat treatment device of heat processing unit as claimed in claim 12, wherein, the aforementioned hot processing element is a link for endless track belt.
15. the partial heat treatment device of heat processing unit as claimed in claim 14, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
16. the partial heat treatment device of heat processing unit as claimed in claim 12, wherein, it is selective hardening that aforementioned hot is handled.
17. the partial heat treatment device of heat processing unit as claimed in claim 12, wherein, it is localized tempering that aforementioned hot is handled.
18. the partial heat treatment device of heat processing unit as claimed in claim 12, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004145991A JP4131714B2 (en) | 2004-05-17 | 2004-05-17 | Method and apparatus for partial heat treatment of heat treatment member |
| JP145991/2004 | 2004-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699608A CN1699608A (en) | 2005-11-23 |
| CN100404702C true CN100404702C (en) | 2008-07-23 |
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| CNB200510070931XA Active CN100404702C (en) | 2004-05-17 | 2005-05-17 | Heat processing unit case heat treating method and its device |
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| JP (1) | JP4131714B2 (en) |
| CN (1) | CN100404702C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5553406B2 (en) * | 2010-01-18 | 2014-07-16 | トピー工業株式会社 | Cooling method and apparatus |
| CN102424908A (en) * | 2011-11-24 | 2012-04-25 | 上海力睿精密金属有限公司 | Spring wire production method |
| CN102994737A (en) * | 2012-12-31 | 2013-03-27 | 哈尔滨工业大学 | Method for adjusting strength distribution of parts during forming of high-strength steel material |
| KR101765596B1 (en) * | 2015-09-09 | 2017-08-07 | 현대자동차 주식회사 | Induction heating device of blank |
| CN113604650B (en) * | 2021-07-12 | 2023-02-28 | 武汉新瑞达激光工程有限责任公司 | Laser strengthening and toughening treatment method for steel rail welding joint |
| CN115232933B (en) * | 2022-06-15 | 2023-09-22 | 合肥福晟机械制造有限公司 | Thrust wheel induction quenching machine tool for processing parts |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1699608A (en) | 2005-11-23 |
| JP2005325422A (en) | 2005-11-24 |
| JP4131714B2 (en) | 2008-08-13 |
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