CN2302261Y - Liquid nitrogen steam bath low-temperature treatment apparatus - Google Patents
Liquid nitrogen steam bath low-temperature treatment apparatus Download PDFInfo
- Publication number
- CN2302261Y CN2302261Y CN 97221547 CN97221547U CN2302261Y CN 2302261 Y CN2302261 Y CN 2302261Y CN 97221547 CN97221547 CN 97221547 CN 97221547 U CN97221547 U CN 97221547U CN 2302261 Y CN2302261 Y CN 2302261Y
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- built
- stainless steel
- box
- low temperature
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The utility model relates to a super low temperature treating device used for metal materials, which is composed of a self boosting liquid nitrogen container and a low temperature treating box, wherein, the low temperature treating box comprises an outer shell, a heat insulating material layer, a built-in stainless steel box and a box cover, wherein, the built-in stainless steel box is arranged in the center position of the low temperature treatment box. The periphery and the bottom of the built-in stainless steel box are surrounded by the outer shell and heat insulating material layer, the top part of the built-in stainless steel box is insulated and sealed by the box cover, the self boosting liquid nitrogen container is connected with the built-in stainless steel box by a pipe passage, and in addition, the inner part of the built-in stainless steel box is provided with a plurality of open boxes with top parts lower than the box cover. The utility model has the advantages of simple structure and convenient use, the utility model causes parts to be processed in a nitrogen bath and solves the problems of the dehiscence of the parts at the time of liquid nitrogen low temperature treatment, and the utility model simultaneously saves the consumption of liquid nitrogen and reduces environmental pollution.
Description
The utility model is a kind of very low temperature treatment unit that is used for metallic substance, and it relates to improvement on prior art and the apparatus structure and the raising on the performance.
Very low temperature is handled the sub-zero treatment that is meant below-110 ℃, and it is the continuation of quench cooled, and this technology can make the retained austenite in the back tissue that quenches further reduce, and brings the result of following three aspects thus, one. stablized tissue and part precision; Two. improved the mechanical property of material; Three. improve the grinding performance of material, do not produced be full of cracks when making grinding.Because the advantage that very low temperature is handled, various countries have obtained using widely in industries such as precision optical machinery, precision die, instrument for many years.Present employed low-temperature treatment plant uses liquid nitrogen as cooling agent more, and its processing mode also mostly is direct immersion, and treatment temp reaches-196 ℃, because liquid nitrogen heat conduction is fast and too big with the temperature difference of processed part, the part cracking is scrapped.
The purpose of this utility model designs at existing deficiency in the said apparatus just a kind of novel very low temperature treatment unit that is used for metallic substance is provided, it is to utilize that nitrogen has different heat-conduction coefficient under differing temps and pressure, the principle design that differs greatly again forms, it does not directly contact with liquid nitrogen when part is handled, prevented the cracking danger that thermograde causes too greatly, make approaching-196 ℃ condition of temperature again, fully satisfied the processing requirement of material very low temperature processing environment.
The purpose of this utility model realizes by following measure and device:
This kind liquid nitrogen gas is bathed low-temperature treatment plant, it is made up of boost certainly liquid nitrogen vessel and subzero treatment case two portions, wherein, the subzero treatment case comprises shell, insulation material layer, built-in stainless steel case and case lid, its structure design characteristic is: built-in stainless steel case places the central part of subzero treatment case, reaching the bottom is all around surrounded by shell and insulation material layer, the top is heat insulation and sealing by case lid, liquid nitrogen vessel is connected by the bottom of pipeline with built-in stainless steel case from boosting, in addition, in built-in stainless steel case several open top containers are set, its top is lower than case lid.This kind structure design does not directly contact with liquid nitrogen when part is handled, and has prevented the cracking danger that thermograde causes too greatly, makes approaching-196 ℃ condition of temperature again, has fully satisfied the processing requirement of material very low temperature processing environment.
The drawing of accompanying drawing is described as follows:
Fig. 1 is an one-piece construction synoptic diagram of the present utility model
Below with reference to drawings and Examples the utility model is further described:
Shown in accompanying drawing 1, the utility model structure is, the liquid nitrogen gas is bathed the very low temperature treatment unit and is made up of boost certainly liquid nitrogen vessel 1 and subzero treatment case 5 two portions, wherein, subzero treatment case 5 comprises shell 6, insulation material layer 7, built-in stainless steel case 8 and case lid 9, built-in stainless steel case 8 places the central part of subzero treatment case 5, reaching the bottom is all around surrounded by shell 6 and insulation material layer 7, the top is by case lid 9 heat insulation and sealings, liquid nitrogen vessel 1 is connected with the bottom of built-in stainless steel case 8 by pipeline 4 from boosting, in addition, several open top containers 10 are set in built-in stainless steel case 8, generally according to the size of the volume of built-in stainless steel case 8, its quantity is 1-5, in this structure be 4, its overhead height is lower than the height of going to the bottom of case lid 9, and its spacing is from being 5-15mm.
The working process of the utility model device is, workpiece 11 is put into the open top container 10 of stainless steel case 7, liquid nitrogen in the liquid nitrogen producer 1 that boosts is after relief valve 2 superchargings, Open valve 3 makes liquid nitrogen by the road in the 4 stainless steel casees 8 that enter in the subzero treatment case 5, with the tank level control of liquid nitrogen when the 50-80mm of the top of distance open top container 10, valve-off 3, cover case lid 9, at this moment in the top of liquid level and the open top container low temperature steam state of nitrogen, at this moment, metal parts is placed in the steam state environment that is in nitrogen and handles, and temperature herein is subzero 194-195 ℃.
Through test determination, the rod iron of the Cr12Mo1V1 of Φ 47 is in-194.5 ℃ steam state environment, be cooled to-160 ℃ of processing requirement must be 6.6 times that liquid nitrogen directly soaks the time, under the prerequisite that reaches the processing requirement temperature, successfully solved a part rimose difficult problem.
The utility model device compared with prior art has simple in structure, and is easy to use, solved liquid The problem of Cracking of part during the nitrogen K cryogenic treatment is both the use amount of having saved liquid nitrogen, reduced environment Pollute.
Claims (2)
1. a liquid nitrogen gas is bathed low-temperature treatment plant, it is made up of liquid nitrogen vessel (1) and subzero treatment case (5) two portions, wherein, subzero treatment case (5) comprises shell (6), insulation material layer (7), built-in stainless steel case (8) and case lid (9), it is characterized in that: built-in stainless steel case (8) places the central part of subzero treatment case (5), reaching the bottom is all around surrounded by shell (6) and insulation material layer (7), the top is heat insulation and sealing by case lid (9), liquid nitrogen vessel (1) is connected with the bottom of built-in stainless steel case (8) by pipeline (4), in addition, several open top containers (10) are set in built-in stainless steel case (8), and its top is lower than case lid (9).
2. liquid nitrogen gas according to claim 1 is bathed low-temperature treatment plant, it is characterized in that: distance is 5-15mm between the lower bottom part of the top of open top container (10) and case lid (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97221547 CN2302261Y (en) | 1997-07-23 | 1997-07-23 | Liquid nitrogen steam bath low-temperature treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97221547 CN2302261Y (en) | 1997-07-23 | 1997-07-23 | Liquid nitrogen steam bath low-temperature treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302261Y true CN2302261Y (en) | 1998-12-30 |
Family
ID=33936918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97221547 Expired - Fee Related CN2302261Y (en) | 1997-07-23 | 1997-07-23 | Liquid nitrogen steam bath low-temperature treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302261Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323139A (en) * | 2011-08-09 | 2012-01-18 | 振石集团东方特钢股份有限公司 | Cold insulation testing device for low-temperature impacts |
| CN102818731A (en) * | 2011-06-10 | 2012-12-12 | 中国石油天然气集团公司 | Low temperature test system of low temperature stretching tests |
-
1997
- 1997-07-23 CN CN 97221547 patent/CN2302261Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818731A (en) * | 2011-06-10 | 2012-12-12 | 中国石油天然气集团公司 | Low temperature test system of low temperature stretching tests |
| CN102818731B (en) * | 2011-06-10 | 2014-08-06 | 中国石油天然气集团公司 | Low temperature test system of low temperature stretching tests |
| CN102323139A (en) * | 2011-08-09 | 2012-01-18 | 振石集团东方特钢股份有限公司 | Cold insulation testing device for low-temperature impacts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2302261Y (en) | Liquid nitrogen steam bath low-temperature treatment apparatus | |
| CN205499901U (en) | Volatile petrochemical liquid product storage tank | |
| CN203498461U (en) | Carburization-method heat treatment tank device for inspecting austenitic grain sizes of steel materials | |
| CN202594186U (en) | A novel water-cooled solution storage tank | |
| CN211754853U (en) | Low temperature reation kettle's heat preservation equipment | |
| CN2682849Y (en) | Small-sized low-temperature creature freezing instrument | |
| CN209388826U (en) | A kind of transformer has load oil changing device | |
| CN209917829U (en) | High-pressure chemical reaction kettle | |
| CN208045253U (en) | Power transformer water cooling plant | |
| CN215328258U (en) | Low-temperature deep cooling device | |
| CN108932986B (en) | High-temperature high-pressure reaction kettle suitable for hot chamber irradiation environment and test method | |
| CN219135123U (en) | Industrial liquid nitrogen refrigerator device | |
| CN202256024U (en) | Cold insulation testing device for low temperature impact | |
| CN213147051U (en) | Ultra-deep cooling treatment box | |
| CN220099105U (en) | Cryogenic treatment equipment for bimetal band saw | |
| CN209144212U (en) | Nitrogen charging anaerobic annealing device | |
| CN112555670A (en) | Movable liquid hydrogen zero release storage and filling integrated storage tank | |
| JPS54159720A (en) | Residual liquid processing system for low temperature liquified gas tank | |
| CN220016974U (en) | Thermal insulation mechanism for liquefied natural gas production storage tank | |
| CN221147192U (en) | Cooling water tank for metallurgical equipment | |
| CN2406242Y (en) | Micro-wave diminishing pot | |
| CN217731459U (en) | Constant-temperature storage system for surfactant | |
| CN218914543U (en) | Vertical air storage tank heating drainage device | |
| JPS5715200A (en) | Boil off gas processing method | |
| CN212902003U (en) | Novel solution heating box |
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 |