CN102234710A - Ohmic heating method and ohmic heating device - Google Patents
Ohmic heating method and ohmic heating device Download PDFInfo
- Publication number
- CN102234710A CN102234710A CN2010101566225A CN201010156622A CN102234710A CN 102234710 A CN102234710 A CN 102234710A CN 2010101566225 A CN2010101566225 A CN 2010101566225A CN 201010156622 A CN201010156622 A CN 201010156622A CN 102234710 A CN102234710 A CN 102234710A
- Authority
- CN
- China
- Prior art keywords
- contact
- tooth
- flank
- back side
- workpiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to an ohmic heating method and an ohmic heating device. Through the ohmic heating method and the ohmic heating device, the quenching or annealing of the back surface and tooth surface of a workpiece can be carried out in a roughly continuous operation period, and the high-precise quenching or annealing quality is easily obtained on the back surface or tooth surface while striving to improve the efficiencies of quenching or annealing. The ohmic heating method is characterized by comprising the following steps that a switching device is switched to a back surface side, so that one pair of first touch points contact the two ends of the heating range in the length direction of the back surface of the workpiece supported by a support device, the regulated frequency and output current for the back surface are supplied to the touch points from a power supply device, and then ohmic heating is carried out on the back surface; and after the step, the switching device is switched to a tooth surface side, so that one pair of second touch points contact the two ends of the heating range in the length direction of the tooth surface of the workpiece, the regulated frequency and output current for the tooth surface are supplied to the touch points from the power supply device, and then the ohmic heating is carried out on the tooth surface.
Description
Technical field
The present invention relates to a kind of by energising heating to turning to the back side of workpiece such as tooth bar and the flank of tooth quenches or the energising heating means and the electric heating device that use during tempering.
Background technology
Originally, as this class electric heating device, for example, disclosed in the Patent Document 1 (speciallyying permit communique No. 4232973) as Japan.This electric heating device be equipped with length direction along tooth bar in heated perimeter in opposite directions a pair of powered electrode (contact) of configuration, to the supply unit of the electric current of this powered electrode supply assigned frequency, and begin from the inclined to one side mid-way of direction in opposite directions of powered electrode to this direction horizontal direction that intersects of straight line portion of terminal of extending roughly in opposite directions, from described supply unit item powered electrode supply predetermined electric current, and the flank of tooth of energising heating tooth bar etc. quenches by this portion of terminal.
But, this electric heating device is the flank of tooth or the back side that makes pair of contact contact tooth bar, then respectively to the flank of tooth or back side supply regulation outward current, thereby reach the flank of tooth of energising heating tooth bar or the purpose of quenching in the back side, but can not continue the flank of tooth is quenched in the back side of tooth bar after quenching.So, can not one roughly successive carry out the quenching or the tempering of the tooth bar back side and the flank of tooth in working cycle, exist operating efficiency low, and the quenching of the tooth bar back side or the flank of tooth or the annealing quality problem points that is difficult to guarantee.
Summary of the invention
In view of such situation, the object of the present invention is to provide a kind of energising heating means and electric heating device, one roughly successive carry out the quenching or the annealing of the back of work and the flank of tooth in working cycle, make every effort to improve and quench or the annealing efficiency of operation, can easily obtain high-precision quenching or annealing quality with the flank of tooth overleaf simultaneously.
For achieving the above object, the present invention is achieved in that
A kind of energising heating means, it is characterized in that having following step, shifter is switched to rear side, make the length direction heated perimeter two ends of paired the 1st contact contact, supply the frequency of the regulation of using at back side and the step at the outward current energising heating back side to this contact from supply unit with the back side of bracing or strutting arrangement supporting workpiece; And after this step, described shifter is switched to flank of tooth side, make paired the 2nd contact contact the length direction heated perimeter two ends of the described workpiece flank of tooth, the frequency of the regulation of using to this contact supply flank of tooth from described supply unit and the step of the outward current energising heating flank of tooth.
Described method is characterized in that, possesses after the energising heating of the energising at the described back side heating back and the described flank of tooth, by being configured in refrigerating unit between described each contact to the step of the described back side and flank of tooth shower cooling water.And, possess after described switch means is switched, will adjust to MIN step to the power frequency and the electric power of described each contact supply as far as possible.
A kind of electric heating device, it is characterized in that, have paired the 1st contact and the 2nd contact that can contact the back of work that supports by bracing or strutting arrangement and flank of tooth length direction heated perimeter two ends on the electric heating device, be provided in paired refrigerating unit between each contact, by shifter to the supply unit of described the 1st contact and the 2nd contact supply rated current, control the control device of this supply unit, described refrigerating unit and described shifter; Described control device is switching to the back side or the flank of tooth with described shifter being selected a property, simultaneously according to the switching state of this shifter from described supply unit to described the 1st contact or the supply back side, the 2nd contact with or the frequency and the outward current of the regulation used of the flank of tooth.
Described electric heating device is characterized in that, described supply unit has a plurality of frequency changer circuits or has frequency and output can be adjusted to a MIN frequency circuit as far as possible.
The technique effect of invention is:
1, energising heating means of the present invention, owing to possess the step that shifter is switched to the rear side energising heated parts back side, and the step that after this step, shifter is switched to the flank of tooth side energising heated parts flank of tooth, therefore can one roughly successive carry out the quenching or the annealing of the back of work and the flank of tooth in working cycle, can when making every effort to improve quenching or annealing operating efficiency, easily obtain good quenching or annealing quality with the flank of tooth overleaf.
2, energising heating means of the present invention, because after possessing switch on overleaf heating back and flank of tooth energising heating, from being configured in refrigerating unit between each contact to the step of the back side and flank of tooth shower cooling water, so, can carry out the quenching of the back of work and the flank of tooth efficiently by enough water coolants, also can easily obtain high-precision quenching quality with the flank of tooth overleaf simultaneously.
3, energising heating means of the present invention, also possess after shifter switches, adjust to MIN step with being supplied to the power frequency and the output of each contact as far as possible, so can the automatically switch back side of workpiece and the quenching conditions of the flank of tooth, can carry out the quenching or the annealing of the back side and the flank of tooth more efficiently.
4, electric heating device of the present invention, when shifter being switched to the back side and the flank of tooth with selecting a property by control device, switching state according to this shifter is supplied outward current according to the assigned frequency that the back side is used and the flank of tooth is used to the 1st contact or the 2nd contact from supply unit, so, require 1 described invention the same with patent, can one roughly successive carry out the quenching or the annealing of the back of work and the flank of tooth in working cycle, can when making every effort to improve quenching or annealing efficiency of operation, easily obtain high-precision quenching or annealing quality with the flank of tooth overleaf.
5, electric heating device of the present invention, supply unit has a plurality of frequency changer circuits or has frequency and output can be adjusted to a MIN frequency circuit as far as possible, so, can be from each frequency changer circuit conscientiously and stably to the back side or the suitable electric current of flank of tooth supply of workpiece, and can further promote operating efficiency and quenching quality etc.
Description of drawings
Fig. 1 is the summary pie graph of the present invention's electric heating device of being correlated with;
Fig. 2 is a contact of the present invention contact condition schematic section;
Fig. 3 is the front elevation and the B-B direction of arrow synoptic diagram of other contact conditions of contact of the present invention;
Fig. 4 is a cooling casing explanatory view of the present invention;
Fig. 5 is the explanatory view of switch of the present invention and frequency changer circuit;
Fig. 6 is the explanatory view of switch of the present invention and other examples of frequency changer circuit;
Fig. 7 is a quenching method example signal schedule drawing of the present invention;
Among the figure:
1 ... electric heating device, 2a, 2b ... chuck, 3 ... chuck drive portion, 4a, 4b ... the 1st contact, 4c, 4d ... the 2nd contact, 5a, 5b ... the contact driving part, 6 ... switch, 7a, 7b ... the cooling casing, 8a, 8b ... the casing driving part, 9 ... frequency changer circuit, 9a ... the 1st frequency changer circuit, 9b ... the 2nd frequency changer circuit, 10 ... control part, 11 ... chilled(cooling) water supply (CWS) portion, 12 ... recess, 13 ... the casing body, 13a ... the water coolant stream, 13b ... jet hole, 14 ... the output adjustment part, W ... workpiece (tooth bar), Wa ... the back side, Wb ... the flank of tooth, Wc ... teeth groove (paddy).
Embodiment
Describe in detail to carrying out the optimal morphology that the present invention adopts according to drawing below.
Example when Fig. 1～Fig. 7 represents that the electric heating device that will the present invention relates to is used for rack quenching.As shown in Figure 1, the tooth bar that electric heating device 1 of the present invention is suitable for (below be called workpiece W) becomes the flank of tooth Wb of predetermined angular by the relative axis with helical teeth, and constitutes at the back side Wa that is made up of the semicircle cambered surface of this flank of tooth Wb opposition side.
Then, electric heating device 1 is equipped with array apparatus down: by the left and right sides chuck 2a, the 2b that support described workpiece W two ends as supporting method, move and tighten with the direction that makes this chuck 2a, 2b according to arrow イ or unclamp the chuck drive portion 3 that the click etc. of workpiece W is formed, and 1 couple the 2nd contact 4c, the 4d that form by the copper coin on the length direction heated perimeter two ends that are disposed at workpiece W back side Wa etc.
In addition, connecting contact driving part 5a on described the 1st contact 4a, the 4b, according to the arrow ロ advance and retreat of Fig. 1, the output terminal that can connect switch 6 one sides simultaneously is as shifter simultaneously for contact 4a, 4b.In addition, connecting contact driving part 5b on described the 2nd contact 4c, the 4d, contact 4c, 4d can connect the output terminal of the opposite side of the above switch 6 simultaneously simultaneously according to arrow Ha advance and retreat.Cooling casing 7a and cooling casing 7b have been disposed between described the 1st contact 4a, the 4b and between the 2nd contact 4c, the 4d as refrigerating unit, connect the casing driving part 8a that forms by open and close valve etc. on this cooling casing 7a, connecting the casing driving part 8b that forms by same valve etc. on the cooling casing 7b.
And, connecting as the frequency changer circuit 9 of supply unit and having minicomputer or the control part of sequencer 10 at the input terminus of described switch 6.At this moment, switch 6 as shown in Figure 5, constitute by common contact 6a and normally closed contact 6b, normal opened contact 6c and electromagnetism shutter or the special-purpose switch of being furnished with driving part 6d, common contact 6a is connected in frequency changer circuit 9, normally closed contact 6b is connected in the 1st contact 4a, 4b, simultaneously, normal opened contact 6c is connected in the 2nd contact 4c, 4d.In addition, as shown in Figure 1, described control part 10 is except connecting switch 6, also connecting frequency changer circuit 9, chuck drive portion 3, contact driving part 5a, 5b, casing driving part 8a, 8b respectively, in addition, connecting chilled(cooling) water supply (CWS) portions 11 such as cooling water tank or running water pipe on described each casing driving part 8a, 8b.
Described the 1st contact 4a, 4b and the 2nd contact 4c, 4d have the recess 12 of semicircular arc as shown in Figure 2 on its contact surface, this recess 12 closely contacts with the part of the circular arc periphery of workpiece W.At this moment, the 1st contact 4a, 4b contact (for example from the top contact) with the back side Wa of workpiece W, and the 2nd contact 4c, 4b contact (for example from the below contact) with the non-flank of tooth (part beyond the teeth groove described later) at the length direction heated perimeter two ends of the flank of tooth Wb of workpiece W.
And described the 2nd contact 4c, 4b are not limited to form shown in Figure 2, and its contact surface also can touch in the teeth groove that begins most (paddy) Wc at length direction heated perimeter two ends of flank of tooth Wb, and is for example shown in Figure 3.In addition, about the 1st contact 4a, 4b and the 2nd contact 4c, 4d, among the pair of contact, contact 4b, the 4d of one side is configured to move according to the arrow ニ of Fig. 3 (a), also can according to can corresponding flank of tooth Wb or the form of the length L of back side Wa constitute, this formation can be applicable to the contact 4a～4d of form shown in Figure 2.So, the form of contact 4a～4d just can be according to back side Wa or the size of flank of tooth Wb or the shapes such as the degree of depth of teeth groove Wc of workpiece W, use the object of the contact surface of osculatory with suitable shape or Rack.
Described cooling casing 7a, 7b are furnished with the casing body 13 that forms water coolant stream 13a in inside as shown in Figure 4, with the flank of tooth Wb of the workpiece W of this casing body 13 or back side Wa in opposite directions above or below formed a plurality of jet hole 13b.At this moment, the jet hole 13b on the cooling casing 7b of flank of tooth Wb side forms oblique along the helical teeth of flank of tooth Wb.Then, by the operation of described casing driving part 8a, 8b, to cooling-water flowing Figure 13 of casing body 13 a cooling water supply, spray to the flank of tooth Wb of workpiece W (or back side Wa) according to direction shown in the arrow ホ from jet hole 13b from described chilled(cooling) water supply (CWS) portion 11.
Described frequency changer circuit 9 is made of the frequency changer circuit of thyristor, its can be according to the rules frequency (for example 60～100Hz) from the alternating current of its output terminal to described switch 6 output regulation outputs.As shown in Figure 5, there is output adjusting portion 14 inside of this frequency changer circuit 9, it can regulate frequency or output and time to the electric current of described contact 4a～4b supply, by the control signal adjustment output adjustment part 14 of sending, for example export the back side and quench with electric current and flank of tooth quenching 2 kinds of electric currents of electric current from described control part 10.
In addition, structure as the frequency changer circuit 9 of supply unit is not limited to Fig. 5, for example shown in Figure 6, frequency changer circuit 9 has the 1st frequency changer circuit 9a of back side quenching usefulness and the 2nd frequency changer circuit 9b of flank of tooth quenching usefulness, also the output terminal of frequency changer circuit 9a, 9b can be connected on the common terminal 6a of switch 6.At this moment, the 1st frequency changer circuit 9a and the 2nd frequency changer circuit 9b will form by the control signal of control part 10 and select the operating state of a property, but the structure of switch 6 just is not the switching of an input two outputs, but the switching of two inputs, two outputs, therefore two frequency changer circuit 9a, 9b can be in operating state simultaneously.If adopt this structure, that will be from frequency changer circuit 9a, 9b (special use) circuit to the 1st contact 4a, 4b and the 2nd contact 4c, 4d supply regulation.In addition, at this moment, also can on the 1st frequency changer circuit 9a and the 2nd frequency changer circuit 9b, described output adjustment part 14 be set, the electric current of decision back side quenching usefulness or flank of tooth quenching usefulness, thus carry out trickle control.
Use a quench example of operation of described electric heating device 1 according to the schedule drawing of Fig. 7 explanation workpiece W below.And, in the following description, be structure shown in Figure 5 as the frequency changer circuit 9 of supply unit.At first, block (K01) described workpiece W by left and right sides chuck 2a, 2b, turn round described contact driving part 5a, 5b the running, and make the 1st contact 4a, 4b and the 2nd contact 4c, 4d to the back side of workpiece W Wa and flank of tooth Wb advance (K02), when the 1st contact 4a, 4b touched the length direction heated perimeter two ends of back side Wa of workpiece W, the 2nd contact 4c, 4d also touched the length direction heated perimeter two ends of the flank of tooth Wb of workpiece W.
Under this state, the driving part 6d of the control signal running switch 6 by control part 10 switches (K03) to rear side with this switch 6.Then, under this state, adjust described output adjustment part 14 by the control signal of control part 10, and the time is fed to the 1st contact 4a, 4b with back side quenching with electric current according to the rules, energising heating (K04) back side Wa, when this energising heating finishes, the time operation casing driving part 8a according to the rules of the control signal by control part 10 simultaneously roughly, and from cooling casing 7a shower cooling water, the back side Wa after cooling (K05) heating.By heating and the cooling of this specified time, the back side Wa of workpiece W is quenched.
Then, after the back side Wa of workpiece W quenches, control signal by control part 10 is switched (K06) to flank of tooth Wb side with switch 6, under this state, adjust the output adjustment part 14 of frequency changer circuit 9 by the control signal of control part 10, and the time is fed to the 2nd contact 4c, 4d with flank of tooth quenching with electric current according to the rules, energising heating (K07) flank of tooth Wb, when this energising heating finishes, the time operation casing driving part 8b according to the rules of the control signal by control part 10 simultaneously roughly, and from cooling casing 7b shower cooling water, the flank of tooth Wb after cooling (K08) heating.
By heating and the cooling of this specified time, the flank of tooth Wb of workpiece W is quenched.The quenching of this flank of tooth Wb moves described contact driving part 5a, 5b after finishing, and makes contact 4a～4d retreat (K09), removes the contact condition of contact 4a～4d and workpiece W.Thereafter, the control signal operation chuck drive portion 3 by control part 10 retreats chuck 2a, 2b, unclamps (K10) workpiece W, and takes out workpiece W from left and right sides chuck 2a, 2b, so far finishes a series of quenching operation.That is, the back side Wa of workpiece W and the quenching of flank of tooth Wb can under the state of having set workpiece W, roughly be carried out in the successive circulation at one by the control signal of control part 10.
And described quenching method is an example, for example, advancing of contact 4a～4d when operation K02 can be that the 1st contact 4a, 4b advance separately, the 2nd contact 4c, 4d then advance behind operation K06 etc., that is, the 1st contact 4a, 4b and the 2nd contact 4c, 4d can move respectively.In addition, the situation the when back side Wa of workpiece W or flank of tooth Wb quench has been described in Fig. 7, when these are carried out the tempering operation, as long as omit the refrigerating work procedure of operation K05, K08.And, under identical switch-on regime, when the back side Wa of heated parts W and flank of tooth Wa, can not adjust the output adjustment part 14 of frequency changer circuit 9, as long as to the electric current of contact 4a～certain output of 4d supply.
Like this, use the words of described electric heating device, by control part 10, switch 6 is switched to rear side and flank of tooth side with selecting a property, simultaneously according to the switching state frequency according to the rules of this switch 6 from frequency changer circuit 9 to the 1st contact 4a, 4b and the 2nd contact 4c, time is supplied outward current among the 4d one according to the rules, therefore can one roughly successive carry out quenching or the annealing of back side Wa and the flank of tooth Wb of workpiece W in working cycle, can when making every effort to improve quenching or annealing efficiency of operation, can easily on the back side of workpiece W Wa and flank of tooth Wb, obtain high-precision quenching or annealing quality.
In addition, if constitute frequency changer circuit 9 as supply unit by the frequency changer circuit of an adjustable frequency and output, that just can export the electric current that the electric current used at the back side and the flank of tooth are used respectively by control part 10 through output adjustment part 14, like this formation of frequency changer circuit 9 is simplified the back and just can form low-cost electric heating device 1.In addition, if constitute frequency changer circuit 9 by 2 special-purpose frequency changer circuit 9a, the 9b that the back side is used and the flank of tooth is used, that just can simplify the control of being undertaken by control part 10 simultaneously conscientiously stably to the back side of workpiece W Wa or flank of tooth Wb supply predetermined electric current.
And, if the recess of semicircular arc 12 is arranged on the 1st contact 4a, 4b and the 2nd contact 4c, the 4d, contact 4a～4d just can fit tightly the non-flank of tooth part at the back side of workpiece W Wa or flank of tooth Wb so, make switch-on regime stable, the generation of spark etc. when suppressing energising, and can be easily on the flank of tooth Wb of workpiece W or back side Wa, obtain more high-precision quenching or annealing quality.In addition, if structure is that the 2nd contact 4c, 4d touch in the teeth groove Wc of workpiece W flank of tooth Wb, location between the flank of tooth Wb of the 2nd contact 4c, 4d and workpiece W just can be carried out conscientiously so, define the action of the 2nd contact 4c, 4d when switching on etc. simultaneously, switch-on regime can be stablized like this, and high-precision quenching or tempering quality can be easily on the flank of tooth Wb of workpiece W, obtained.
In addition, energising heating means of the present invention are provided with switch 6 are switched to switch on the then operation of back side Wa of heated parts W of rear side, and the operation that after this operation, switch 6 is switched to the flank of tooth Wb of flank of tooth side energising heated parts W, so can one roughly successive carry out quenching or the annealing operation of the back side Wa of workpiece W and flank of tooth Wb in working cycle, can when making every effort to improve quenching or annealing efficiency of operation, easily on the back side of workpiece W Wa and flank of tooth Wb, obtain good quenching or annealing quality.
In addition, because after being provided in back side Wa energising heating back and flank of tooth Wb energising heating, from being disposed at the cooling casing 7a between contact 4a, 4b and 4c, the 4d and cooling off the operation of casing 7b to back side Wa and flank of tooth Wb shower cooling water, so can carry out the quenching of back side Wa and the flank of tooth Wb of workpiece W by water coolant effectively, can easily on the back side of workpiece W Wa and flank of tooth Wb, obtain high-precision quenching quality simultaneously.And, when switching switch 6, to adjust to MIN operation K04, K07 from the power frequency and the output of frequency changer circuit 9 outputs owing to be equipped with, quenching conditions of the back side Wa of workpiece W and flank of tooth Wb etc. so can automatically switch can carry out the quenching of back side Wa and flank of tooth Wb or annealing etc. more effectively.
And, in described example, the form of each contact 4a～4d or touch the form of position, cooling casing 7a, the 7b of workpiece W, from equal example just such as the power frequency of frequency changer circuit 9 outputs, it can carry out suitable change according to the form of workpiece W, for example, make the form of contact 4a, the 4b of the back side Wa side of workpiece W and flank of tooth Wb side and 4c, 4d not equal.
The present invention is not defined in tooth bar with workpiece, and it can be used for quenching annealing faces such as geared surface, and has at the face opposite with it and need quench or the various workpiece at the tempered back side.
In sum, be preferred embodiment of the present invention only, be not to be used for limiting practical range of the present invention, promptly all equivalences of doing according to the content of the present patent application claim change and modify, and all should be technology category of the present invention.
Claims (5)
- One kind the energising heating means, it is characterized in that having two steps: shifter is switched to rear side, make the length direction heated perimeter two ends of paired the 1st contact contact, supply the frequency of the regulation of using at back side and the step at the outward current energising heating back side to this contact from supply unit with the back side of bracing or strutting arrangement supporting workpiece; After this step, described shifter is switched to flank of tooth side, make paired the 2nd contact contact the length direction heated perimeter two ends of the described workpiece flank of tooth, the frequency of the regulation of using to the contact supply flank of tooth from described supply unit and the step of the outward current energising heating flank of tooth.
- 2. according to the described energising heating means of claim 1, it is characterized in that, after energising heating back, the described back side and described flank of tooth energising heating, by being configured in refrigerating unit between described each contact to the described back side and flank of tooth shower cooling water.
- 3. according to claim 1 or 2 described energising heating means, it is characterized in that, after described shifter switches, will adjust to bottom line as far as possible to the power frequency and the electric power of described each contact supply.
- 4. electric heating device, it has paired the 1st contact and the 2nd contact that can contact the back of work that supports by bracing or strutting arrangement and flank of tooth length direction heated perimeter two ends, be provided in paired refrigerating unit between each contact, by shifter to the supply unit of described the 1st contact and the 2nd contact supply rated current, control the control device of this supply unit, described refrigerating unit and described shifter; It is characterized in that, described control device is switching to the back side or the flank of tooth with described shifter being selected a property, simultaneously according to the switching state of this shifter from described supply unit to described the 1st contact or the supply back side, the 2nd contact with or the frequency and the outward current of the regulation used of the flank of tooth.
- 5. according to the described electric heating device of claim 4, it is characterized in that described supply unit has a plurality of frequency changer circuits or has frequency and output can be adjusted to a MIN frequency circuit as far as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010156622.5A CN102234710B (en) | 2010-04-26 | 2010-04-26 | Ohmic heating method and ohmic heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010156622.5A CN102234710B (en) | 2010-04-26 | 2010-04-26 | Ohmic heating method and ohmic heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102234710A true CN102234710A (en) | 2011-11-09 |
| CN102234710B CN102234710B (en) | 2014-07-02 |
Family
ID=44885829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010156622.5A Active CN102234710B (en) | 2010-04-26 | 2010-04-26 | Ohmic heating method and ohmic heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102234710B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912094A (en) * | 2012-11-02 | 2013-02-06 | 十堰恒进科技有限公司 | Quench machine tool |
| CN104775016A (en) * | 2015-02-28 | 2015-07-15 | 宫电高周波设备（上海）有限公司 | Ohmic heating device for toothed bar |
| CN105296719A (en) * | 2015-09-29 | 2016-02-03 | 宫电高周波设备（上海）有限公司 | Ohmic heating device for rack for steering |
| JP2017057442A (en) * | 2015-09-15 | 2017-03-23 | 株式会社ミヤデン | Electrification heating device for steering rack bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182020Y (en) * | 1993-06-26 | 1994-11-09 | 杜长庆 | Support for electric iron |
| CN1470467A (en) * | 2002-07-25 | 2004-01-28 | 宫电高周波设备（上海）有限公司 | Pipe sealing method and its apparatus |
| CN1642365A (en) * | 2004-07-16 | 2005-07-20 | 宫电高周波设备（上海）有限公司 | Direct-electrifying heating device |
| JP2007224319A (en) * | 2006-02-21 | 2007-09-06 | Miyaden Co Ltd | High-frequency induction-hardening apparatus for rack bar |
| JP4232973B2 (en) * | 2004-06-09 | 2009-03-04 | 株式会社ミヤデン | Direct current heating device |
-
2010
- 2010-04-26 CN CN201010156622.5A patent/CN102234710B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182020Y (en) * | 1993-06-26 | 1994-11-09 | 杜长庆 | Support for electric iron |
| CN1470467A (en) * | 2002-07-25 | 2004-01-28 | 宫电高周波设备（上海）有限公司 | Pipe sealing method and its apparatus |
| JP4232973B2 (en) * | 2004-06-09 | 2009-03-04 | 株式会社ミヤデン | Direct current heating device |
| CN1642365A (en) * | 2004-07-16 | 2005-07-20 | 宫电高周波设备（上海）有限公司 | Direct-electrifying heating device |
| JP2007224319A (en) * | 2006-02-21 | 2007-09-06 | Miyaden Co Ltd | High-frequency induction-hardening apparatus for rack bar |
Non-Patent Citations (3)
| Title |
|---|
| 孙旭茂等: "加热保温时间对轴瓦钢背组织和硬度的影响", 《内燃机配件》, no. 2, 31 December 2000 (2000-12-31), pages 19 - 24 * |
| 陈金荣: "转向齿条齿面高频感应电阻加热淬火自回火工艺研究", 《机械工人（热加工）》, no. 12, 31 December 2003 (2003-12-31), pages 15 - 16 * |
| 陈金荣: "齿条齿面高频感应电阻加热淬火", 《金属热处理》, vol. 26, no. 8, 31 December 2001 (2001-12-31), pages 43 - 44 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912094A (en) * | 2012-11-02 | 2013-02-06 | 十堰恒进科技有限公司 | Quench machine tool |
| CN104775016A (en) * | 2015-02-28 | 2015-07-15 | 宫电高周波设备（上海）有限公司 | Ohmic heating device for toothed bar |
| JP2017057442A (en) * | 2015-09-15 | 2017-03-23 | 株式会社ミヤデン | Electrification heating device for steering rack bar |
| CN105296719A (en) * | 2015-09-29 | 2016-02-03 | 宫电高周波设备（上海）有限公司 | Ohmic heating device for rack for steering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102234710B (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102234710B (en) | Ohmic heating method and ohmic heating device | |
| CN102652045A (en) | Arc welding method and arc welding device | |
| EP2459340B1 (en) | Inductive soldering device with at least one loop element, having two arms positioned at different distances from a surface of a workpiece | |
| US6994835B2 (en) | Silicon continuous casting method | |
| CN102574236B (en) | Method for plasma-cutting a workpiece by means of a plasma-cutting system and pulsating current | |
| CN104673988A (en) | Induction heating annealing machine tool | |
| RU2502587C2 (en) | Method of short-circuit interruption in short-arc welding | |
| JP3902133B2 (en) | Method for producing metal ingot or billet by melting electrode and apparatus for performing the same | |
| JPWO2008050404A1 (en) | Wire electrical discharge machine | |
| JP6628398B2 (en) | Electric heating device for steering rack bar | |
| CN106086368A (en) | A kind of high speed bolt impewdance matching system | |
| JP2011129292A (en) | Induction heating coil | |
| JP2011190510A (en) | Energization-heating method and energization-heating apparatus | |
| CN216972597U (en) | Quenching induction device for camshaft | |
| CN111001903A (en) | High nitrogen steel vibration material disk accuse type accuse nature device | |
| KR20140128300A (en) | Polycrystalline silicon rod manufacturing method | |
| CN105296719A (en) | Ohmic heating device for rack for steering | |
| JP6057329B2 (en) | Rack bar induction hardening equipment | |
| JP3676781B2 (en) | Method for producing a metal ingot or billet by melting an electrode in a conductive slag bath and apparatus for carrying out the same | |
| EP2055418A1 (en) | Wire electric discharge machine | |
| CN104775016A (en) | Ohmic heating device for toothed bar | |
| JPH1128554A (en) | Plasma torch and molten steel heating tundish utilizing the same | |
| US11134559B2 (en) | Plasma torch system | |
| CN100456896C (en) | Direct-electrifying heating device | |
| JP5512941B2 (en) | Silicon purification apparatus and purification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 585 Huocheng Road, Jiading District, Shanghai, 201821 Patentee after: MIYADEN HIGH FREQUENCY PLANT (SHANGHAI) Co.,Ltd. Address before: 201821 Shanghai Huocheng Industrial Zone Jiading Road No. 585 Patentee before: MIYADEN HIGH FREQUENCY PLANT (SHANGHAI) Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |