CN2227659Y - Piling cathode electricity transmitting device for ionic bombardment furnace - Google Patents
Piling cathode electricity transmitting device for ionic bombardment furnace Download PDFInfo
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- CN2227659Y CN2227659Y CN95231385U CN95231385U CN2227659Y CN 2227659 Y CN2227659 Y CN 2227659Y CN 95231385 U CN95231385 U CN 95231385U CN 95231385 U CN95231385 U CN 95231385U CN 2227659 Y CN2227659 Y CN 2227659Y
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- cathode
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- electricity transmission
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- protective layer
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Abstract
The utility model relates to a piling cathode electricity transmitting device for an ionic bombardment furnace in the heat treatment field. The device is mainly composed of a cathode guide sleeve (21), a cathode conducting bar (10), a cathode ray plug (2), an insulating layer encompassing the cathode conducting bar, a gasket (8) and an air gap protective layer (18). The device is characterized in that the outer part of the air gap protective layer (18) which is formed from a metal shielding layer (15) and an inner metal shielding sleeve (13) is added with an anti-splash sleeve (11); the end part of the piling cathode electricity transmitting device extending into the inner end of a furnace is provided with a conducting frame (16); the piling cathode electricity transmitting device is horizontally arranged between a cathode dish (23) and a furnace bottom through the lateral surface of the arched furnace bottom (20), and does not bear the load. The utility model has the advantages that the operation is convenient, the lifetime is long, and the phenomenon of the stray flash is not generated.
Description
The utility model relates to ion bombardment surface-strengthening equipment special-purpose member, belongs to the Equipment for Heating Processing field.
Oozing the method that workpiece surface is strengthened with ion, is a kind of emerging intensification technique method.It is that processed workpiece is put into vacuum vessel, is evacuated to 6.7Pa, then, fills with thin nitrogenous gas and other common permeation body, makes pressure reach 133～1333Pa.Between negative and positive the two poles of the earth in addition behind the high voltage direct current, gas is ionized to positive ion and electronics, under the effect of high-voltage electric field, positive ion is with the surface of very big energy bombarding cathode (workpiece), produce a large amount of heats and make the temperature that workpiece temperature is elevated to be needed, positive ion is compound in the workpiece surface generation simultaneously, chemical reaction and absorption, physics, the chemical process of diffusion have formed the unit or the polybasic compound layer of high rigidity soon.
This method has that infiltration rate is fast, infiltration layer is fine and close, efficient is high, energy-conservation, workpiece deformation is little, nuisanceless, pollution-free, advantage such as labor condition is good, antiseepage is easy, not oxidation in treating processes, not decarburization and workpiece surface quality are good, therefore, be subjected to people's extensive attention in recent years.Be used to finish the specific equipment of this technology, be referred to as ion bombarding furnace.It can be used for carbon steel, steel alloy, stainless steel, Refractory Steel, cast iron, spheroidal graphite cast iron, titanium or titanium alloy etc. are carried out art breading such as ionitriding, ion carbonitriding, ion nitrogen carbon titanium are ternary co-osmosized, nitrogen carbon multiple permeation.
The key part of finishing above-mentioned technology as ion bombarding furnace is the negative electrode conducting rod, promptly is installed in the cathode electricity transmission device on bell and the furnace bottom, and the utility model mainly is to illustrate the stacking cathode electricity transmission device that is installed on the furnace bottom.Carry out ion when oozing, in general its specific equipment all with furnace shell as anode (also can establish anode in addition), negative electrode is stacked cathode electricity transmission device exactly, and it is by put in a vitals giving cathode-workpiece in the burner hearth as the anodic furnace shell with high voltage direct current.Like this,, just have the transmission of electricity process of strong current, on the interface between insulating material and the negative electrode conducting rod, arc discharge takes place easily when when finishing the ion cementation process.Though adopted the air gap protection (or to claim gap protection; be called for short " protecting the crack ") measure; but the variation of the variation of vacuum tightness, workpiece weight or because factors such as sputters in Yin Wendu and the stove; very little when making " protecting the crack " ineffective and phenomenon of taking place to beat arc have a generation; therefore; whether the structure of stacking cathode electricity transmission device is reasonable, just becomes the key that can ion bombarding furnace works better.This just requires that " the protecting the crack " that prevents arc discharge reliably will be arranged in design, and requiring has enough insulating property, to prevent high electrical breakdown, better seal and anti-sputter measure is arranged again in the use.The air gap protective layer is wanted evenly, and thickness is less than 1mm, and the degree of depth is greater than 10mm.Except, also require to hang and characteristics such as stacking possess weight capacity and impact resistance according to workpiece, and can in long-time, be heated and the load-bearing state under non-stop run.
In existing technology, most typical is that the LD-YD type is stacked cathode electricity transmission device.It is by play supporting cathode disc and the effect that is placed on the workpiece above it again with time at the bottom of the water-cooled flattening oven.When stove hour; it can directly support cathode disc at furnace bottom; and when stove is big; a general cathode electricity transmission device and two cathode supporting structure posts of adopting are with three point modes supporting cathode disc; when cathode disc is bigger; often adopt a plurality of stacking cathode electricity transmission devices in parallel and a plurality of cathode supporting structure post to support,, adopt the gap protection ring to form laterally and vertical protection for preventing to beat the arc phenomenon.The stacking cathode electricity transmission device of this structure, weak point is: 1. complex structure is difficult for the levelness of levelling cathode disc; 2. horizontal air gap protective layer, inoperative because the influence of temperature and gravity easily changes; 3. impact and make its work-ing life lower owing to stacking gravity that cathode electricity transmission device bears cathode disc and workpiece loading and unloading; 4. cathode electricity transmission device is located at furnace bottom and can only be connected with cathode disc, operating maintenance inconvenience; 5. the air gap protective layer is to be made of metalwork and ceramic member, and expansion coefficient difference is bigger, and the gap is changed, and often produces to beat the arc phenomenon and stay adhesive, spot or burn out or crackedly cause " protecting the crack " layer destroyed at last.
In order to solve the above-mentioned deficiency of prior art, and design and do not bear weight, do not produce and beat the arc phenomenon, can prevent sputter and easy to operate stacking cathode electricity transmission device, specially propose technical solution of the present utility model.
Basic design of the present utility model is to stack the side of cathode electricity transmission device design in arc furnace bottom [20]; And being lying in cold zone between arc furnace bottom [20] and the cathode disc, it does not bear the gravity and the impact of cathode disc and workpiece; Be added with splash-proof casing [11] in the outside of air gap protective layer [18]; The member that constitutes air gap protective layer [18] both sides all is hardwares.
The designed a kind of ion bombarding furnace of the utility model is used and is stacked cathode electricity transmission device, constituted by negative electrode guide pin bushing [21], negative electrode conducting rod [10], cathode rays plug [2], the insulation layer (comprise interior the insulation covering of bench insulator [9] [7], packing ring [6], insulcrete [4], external insulation pad [3], shielding pad [12], locate insulating mat [14]), gasket [8] and the air gap protective layer [18] that surround negative electrode conducting rod [10], it is characterized in that, outside in air gap protective layer [18] adds the splash-proof casing [11] that useful casting mica is made; Constituting the member of air gap protective layer both sides, is metallic shield cover [15] and metal inner shield cover [13]; The end of stretching to stove the inner at the stacking cathode electricity transmission device is provided with conduction rack [16]; During installation, stack cathode electricity transmission device,, and be horizontally placed between the bottom of cathode disc [23] and arc furnace bottom by the side of arc furnace bottom [20].
It is further characterized in that, stacks cathode electricity transmission device, is horizontally placed on cathode disc [23] below certain distance, and its device itself does not contact with workpiece with cathode disc [23], does not bear the loading of cathode disc [23] and workpiece.
Major advantage of the present utility model is: 1. because the air gap protective layer is made of metallic shield cover [13], stable working does not produce and beats the arc phenomenon; 2. owing to stack cathode electricity transmission device, the end in stretching to stove is provided with conduction rack [16], thus can be connected arbitrarily with workpiece or cathode disc or resting support, easy to operate; 3. do not bear weight owing to the utility model, therefore, long service life; 4. owing to be added with splash-proof casing [11], therefore, can not produce owing to the sputter thing destroys the air gap protective layer and cause short circuit.
Be the description of the drawings below
Fig. 1 is the designed stacking cathode electricity transmission device cross-sectional view of the utility model.
In side with water-cooled layer [19] refrigerative arc furnace bottom [20]; be connected with negative electrode guide pin bushing [21]; in the negative electrode guide pin bushing; along its axis bench insulator [9] is installed; then; the negative electrode conducting rod [10] of packing into successively; splash-proof casing [11]; shielding pad [12]; metal inner shield cover [13]; location insulating mat [14] and metallic shield cover [15]; use nut [17] to compress again; between metal inner shield cover [13] and metallic shield cover [15]; just form the air gap protective layer [18] of a regulation; afterwards; use nut [17] that negative electrode conduction rack [16] is fastened on the negative electrode conducting rod [10] again; stretch to an end in arc furnace bottom [20] outside at negative electrode conductive sleeve [21]; gasket [8] is installed in it; interior insulation covering [7]; packing ring [6]; nut [5]; insulcrete [4], then, in the termination of negative electrode conducting rod; power-line plug [22] and supply lead [2] are installed; external insulation pad [3] uses hold-down nut [1] fastening at last.
Fig. 2 is the cross-sectional view of the designed stacking cathode electricity transmission device splash-proof casing [11] of the utility model.
Fig. 3 is the structural representation of looking up of the designed stacking cathode electricity transmission device splash-proof casing [11] of the utility model.
Fig. 4 is the semi-section structural representation that the LD-YD type that adopts of prior art is stacked cathode electricity transmission device.
This cathode electricity transmission device; by being slab construction shape with water-cooled layer [19] refrigerative furnace bottom [20]; stack the bottom of cathode electricity transmission device by furnace bottom [20]; and supporting the cathode disc [23] of stacking workpiece and using; and be provided with the supporting porcelain knob [24]; between bench insulator [9] and metallic shield cover [15], formed air gap protective layer [18], all same Fig. 1 of other symbols.
Embodiment of the present utility model is as follows:
A kind of ion bombarding furnace with arc furnace bottom adopts the stacking cathode electricity transmission device of the utility model design.At first, in the side of arc furnace bottom, go up the negative electrode guide pin bushing by water-cooled layer accumbency welding, press the illustrated installation order of Fig. 1 again, each part assembling is finished promptly becomes stand-by horizontal stacking cathode electricity transmission device.Then, above it at a distance of certain distance, installation is by the cathode disc [23] of supporting base supporting, workpiece be placed on cathode disc above, be connected with cathode disc by conduction rack [16] again, like this, during work, the electric current of cathode power just leads to workpiece by the cathode power line at last through attaching plug [22], negative electrode conducting rod [10], conduction rack [16], cathode disc [23] and has got on, like this, just can finish purpose that ion oozes by the processing requirement of workpiece.
Claims (2)
1, a kind of ion bombarding furnace is with stacking cathode electricity transmission device; constituted by negative electrode guide pin bushing [21], negative electrode conducting rod [10], cathode rays plug [2], the insulation layer, gasket [8] and the air gap protective layer [18] that surround negative electrode conducting rod [10], be it is characterized in that:
A) in the outside of air gap protective layer [18], add the splash-proof casing [11] that useful casting mica is made,
B) member of formation air gap protective layer both sides is metallic shield cover [15] and metal inner shield cover [13],
C) be provided with conduction rack [16] in the end that the heap cathode electricity transmission device stretches to stove the inner,
D) stack cathode electricity transmission device,, and be horizontally placed between the bottom of cathode disc [23] and arc furnace bottom by the side of arc furnace bottom [20].
2, the stacking cathode electricity transmission device used of a kind of ion bombarding furnace according to claim 1 is characterized in that, stacks cathode electricity transmission device, is horizontally placed on cathode disc [23] below certain distance, and its device itself does not contact with cathode disc [23] and workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95231385U CN2227659Y (en) | 1995-06-07 | 1995-06-07 | Piling cathode electricity transmitting device for ionic bombardment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95231385U CN2227659Y (en) | 1995-06-07 | 1995-06-07 | Piling cathode electricity transmitting device for ionic bombardment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2227659Y true CN2227659Y (en) | 1996-05-22 |
Family
ID=33875998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95231385U Expired - Fee Related CN2227659Y (en) | 1995-06-07 | 1995-06-07 | Piling cathode electricity transmitting device for ionic bombardment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2227659Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882724A (en) * | 2010-03-23 | 2010-11-10 | 东莞宏威数码机械有限公司 | Sealed power transmission device |
-
1995
- 1995-06-07 CN CN95231385U patent/CN2227659Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882724A (en) * | 2010-03-23 | 2010-11-10 | 东莞宏威数码机械有限公司 | Sealed power transmission device |
| CN101882724B (en) * | 2010-03-23 | 2012-07-04 | 东莞宏威数码机械有限公司 | Sealed power transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |