CN2117379U - Vacuum low temp. treating apparatus - Google Patents
Vacuum low temp. treating apparatus Download PDFInfo
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- CN2117379U CN2117379U CN 91214635 CN91214635U CN2117379U CN 2117379 U CN2117379 U CN 2117379U CN 91214635 CN91214635 CN 91214635 CN 91214635 U CN91214635 U CN 91214635U CN 2117379 U CN2117379 U CN 2117379U
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Abstract
The utility model relates to a vacuum low-temperature treating apparatus is special equipment used for the low-temperature treatment of workpieces such as cutters, dies, gears, bearings, rolls and springs. The vacuum low-temperature treating apparatus is composed of a cooling container, a vacuum workroom, a vacuum pump, a raising mechanism and corresponding detection and monitoring instruments. The vacuum low-temperature treating apparatus is characterized in that the vacuum low-temperature treating apparatus is used for holding the workpieces and pumping the vacuum workroom and the matched vacuum pump. The vacuum low-temperature treating apparatus has simple structure, convenient operation, strong versatility, no nuisance, low cost and favorable processing effect on the workpieces. The vacuum low-temperature treating apparatus is suitable for the wide requirements of the production of industrial departments.
Description
The invention belongs to the subzero treatment equipment of metallic substance.
Metallic substance is carried out subzero treatment, is external in recent years a kind of new technology of rising.It is that the process of cooling that workpiece quenches is continued, to subambient a certain temperature course, thus the microtexture of change metallic substance, so that reach the wear resistance of enhancing workpiece and the novel process of dimensional stability.
To the workpiece that mechanical property and manufacturing accuracy are had relatively high expectations, great majority are that materials such as the structural carbon steel of selecting for use carbon content higher, tool steel, high quality steel are made.Because what the Mf point of these materials below zero centigrade, had is low even to-110 ℃.Therefore, these materials can stay residual austenite after quenching, reach more than the 13-45% unexpectedly sometimes, thereby have limited the raising of the hardness and the wear resistance of material.And residual austenite is a unstable structure, is keeping and between the usage period, be subjected to hot and cold can decomposition and inversion, cause the volume of workpiece to expand and be out of shape the geometrical dimension instability.
For improving the above-mentioned performance of material, improve the work-ing life of workpiece, adopt low temperature treatment technology, can eliminate the austenite of workpiece remnants effectively, and make it the microtexture refinement.But reach this purpose, must grasp in low-temperature process, stable and these two main points of whole workpiece temperature homogeneous of warm variable Rate.
The present invention's low-temperature treatment plant in the past all is the form that adopts workpiece and refrigerant (for example liquid nitrogen) directly to contact.Or workpiece directly placed in the refrigerant, or refrigerant injection to workpiece surface.Because temperature control does not reach above-mentioned two main points fully, actual effect is very poor.
People such as the quick hero of Japanese's eightfold Oak have proposed a kind of improvement design (seeing that Japan speciallys permit the Room and openly speciallys permit communique, clear 53-10312).Fig. 1 is the structure longitudinal section synoptic diagram of this device.(4) are cooling vessel among the figure; (5) for having the metal tubing of multi-jet conveying refrigerant (liquid nitrogen); (6) be gas blower; (7) be processed workpiece; (9) mechanism for workpiece is rotated; (10) for suspending the suspender of workpiece in midair; (12) for connecting the refrigerant supply pipe of refrigerant (liquid nitrogen) storage vessel.By finding out among the figure, this design characteristic is: in the time of workpiece (7) the jet surface refrigerant (liquid nitrogen) of hanging, make Workpiece Rotating; And gas blower (6) is set in the bottom of cooling vessel (4), and be used for stirring the cold air around the workpiece, the circulation that makes it to produce direction shown in the arrow, even in the hope of making work-piece cools.Yet in fact do not reach planner's desirable purpose.From the refrigerant (liquid nitrogen) that nozzle gushes out, meet after the room temperature atomizing, under the effect of gas blower, what produce around the workpiece surface is the heat exchange of unbalanced dynamic gas, thereby cooling efficiency is low, and warm variable Rate also is difficult to control stabilization.Experiment shows, workpiece is interregional up and down the bigger temperature difference to have occurred.Moreover, this apparatus structure complexity, use is single-minded too.
The objective of the invention is to, for industrial enterprise provide a kind of practical, can effectively improve the wear resistance of various workpiece (comprising cutter, drill bit, mould, gear, precision bearing, wheel shaft, Subzero valve, roll and spring etc.) and the new design in work-ing life, to be suitable for the extensive needs that industrial sector is produced.
The present invention is by cooling vessel, working spaces, vacuum pump system, the device that lifting mechanism and Detection ﹠ Controling instrument etc. are partly formed.Fig. 2 is the structure longitudinal section synoptic diagram of this device.(1) is cooling vessel among the figure; (2) be the working spaces; (3) be vacuum pump; (4) be lifting mechanism; (5) be vacuum-pumping tube; (6) for connecting the joint that cuts down of vacuum pump; (7) be the joint of regulating of surveying work chamber vacuum tightness; (8) be the thermometer pigtail splice of surveying work room temp; (9) be device pedestal; (10) be apparatus housing.Working spaces in the device (2) is to be connected with multifunction conjunction with a upper end, and the lower end vacuumizes metal tube (5) and is equipped with lifting mechanism with working spaces (2) top cover flange is connected mutually, is lifted on the top of cooling vessel (1).Vacuum pump system then is by vacuum pump (3), multifunction conjunction and connect the system that forms successively for the metal tube parts such as (5) of working spaces (2) extracting vacuum.Multifunction conjunction is then by the integral unit that cuts down joint (6), regulates joint (7), thermometer pigtail splice (8) and suspension hook ring joint are formed.
The invention is characterized in to have a kind of splendid attire workpiece that is used for, avoid it to contact with refrigerant (liquid nitrogen), and the working spaces that can vacuumize, and the vacuum pump system of controlling workpiece temperature variable Rate for working spaces's extracting vacuum of splendid attire workpiece.
Different with previous designs, the present invention carries out work by following principle, on the work rest in the working spaces (2) that the pending workpiece that cleans up is packed into, with flange by galvanized wire working spaces (2) good seal, after cutting down joint (6) usefulness pipe and vacuum pump (3) connection, starting vacuum pump (3) vacuumizes working spaces (2).After vacuum tightness reaches the desired value of treatment process, by lifting mechanism (4) working spaces (2) are inserted in the refrigerant (liquid nitrogen) in the cooling vessel (1) again and cooled off.
The refrigerant that the present invention taked (liquid nitrogen) matches with the vacuum tightness of the working spaces of splendid attire workpiece and realizes technical measures to the workpiece temperature control, more simpler, easy to operate and effective than technique means such as injection, rotation and air blast that the quick hero of eightfold Oak adopted.The invention has the advantages that, good to the workpiece treatment effect; Apparatus structure is simple, and highly versatile is not subjected to the restriction of workpiece size, shape, and easy and simple to handle, nuisanceless, cost is low.
As embodiment, the present invention has been developed into VA-400 type low-temperature treatment plant.
This installs by parts such as the automatic display instrument of processing parameters such as cabinet, Dewar, working spaces, vacuum pump, lifting mechanism and relevant detection temperature, pressure, time, controlling organizations forms, and constitutes removable integral body.
The device technique index:
Machine shape: high 2.4 meters, long 1.1 meters, wide 0.7 meter
Cabinet: aluminum, high 1.8 meters, long 1.1 meters,, wide 0.7 meter
Coolant container: (Dewar), high 1.1 meters, the YDH-100 type
The working spaces: high 0.36 meter, φ is made by stainless steel for 0.3 meter
Vacuum pump: 2XZ-2 mechanical pump
Lifting mechanism comprises: XJW-007 type step-down gear; Wireline, pulley,
Support, suspension hook are (by 45
#Steel is made).
Treatment capacity: 20kg/ day
Monitoring level: show automatically and control
Effect: 3 times of all-purpose bit clean raisings in work-ing life, lathe tool, milling cutter improve more than 1 times only.
After following table has provided and with this device the rapid steel cutlery has been carried out subzero treatment, at the offset information of each producer's service condition with the cutlery that is untreated.First stringer is each producer of being the contrast experiment in the table; The situation that line experimentizes for each producer.As Dongfan Steam Turbine Factory, the 25Cr2Ni4M that uses this device to handle
0V φ 8mm drill bit is processed material, and a drill bit can bore 40 holes, can only bore 10 without the drill bit of the same race of subzero treatment and promptly scrap, the net increase in work-ing life three times.
Table 1, subzero treatment are to the influence in work-ing life of rapid steel cutlery
This apparatus structure is simple, and cost is low, and is reliable, easy to operate, promotes easily, reduces cutlery consumption for using producer, improves work efficiency and reduces cost, and opened up a new road.
Claims (4)
1, a kind of low-temperature treatment plant of partly being made up of instrument such as coolant container, lifting mechanism, Detection ﹠ Controling air pressure, temperature, times is characterized in that, is used for the working spaces of splendid attire workpiece and extracting vacuum and the vacuum pump system that is complementary but have.
2, by the described low-temperature treatment plant of claim 1, it is characterized in that the working spaces is connected with multifunction conjunction by means of a upper end, lower end and working spaces's top cover flange are connected mutually vacuumizes metal tube, and be equipped with lifting mechanism, be lifted on the top of casing internal cooling container.Vacuum pump system then is by vacuum pump, multifunction conjunction, vacuumizes metal tube and connect successively and constitute.
By the described low-temperature treatment plant of claim 2, it is characterized in that 3, the working spaces adds the taking of leads sealing by the top cover flange.
4,, it is characterized in that multifunction conjunction is by a whole composite-joint of cutting down joint, regulating joint, thermometer pigtail splice and suspension hook ring joint constitute by the described low-temperature treatment plant of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214635 CN2117379U (en) | 1991-06-20 | 1991-06-20 | Vacuum low temp. treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214635 CN2117379U (en) | 1991-06-20 | 1991-06-20 | Vacuum low temp. treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117379U true CN2117379U (en) | 1992-09-30 |
Family
ID=4922815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91214635 Granted CN2117379U (en) | 1991-06-20 | 1991-06-20 | Vacuum low temp. treating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017128845A1 (en) * | 2016-01-27 | 2017-08-03 | 太仓捷公精密金属材料有限公司 | Surface treatment process for metal product |
| CN113832328A (en) * | 2021-09-14 | 2021-12-24 | 江苏润孚机械轧辊制造有限公司 | Roller manufacturing method of lithium battery pole piece rolling mill |
-
1991
- 1991-06-20 CN CN 91214635 patent/CN2117379U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017128845A1 (en) * | 2016-01-27 | 2017-08-03 | 太仓捷公精密金属材料有限公司 | Surface treatment process for metal product |
| CN113832328A (en) * | 2021-09-14 | 2021-12-24 | 江苏润孚机械轧辊制造有限公司 | Roller manufacturing method of lithium battery pole piece rolling mill |
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