CN105651929B - Intelligent Fire Assaying cupel(lation) furnace - Google Patents
Intelligent Fire Assaying cupel(lation) furnace Download PDFInfo
- Publication number
- CN105651929B CN105651929B CN201610117155.2A CN201610117155A CN105651929B CN 105651929 B CN105651929 B CN 105651929B CN 201610117155 A CN201610117155 A CN 201610117155A CN 105651929 B CN105651929 B CN 105651929B
- Authority
- CN
- China
- Prior art keywords
- lation
- burner hearth
- intelligent fire
- cupel
- furnace
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to Purity of Noble Metals detection device, more particularly to a kind of intelligent Fire Assaying cupel(lation) furnace.The intelligent Fire Assaying cupel(lation) furnace, including console mode main body, it is characterised in that：The body top is provided with burner hearth, and lower body part is provided with the air inlet pipe inside connection burner hearth, and burner hearth rear portion is provided with gas guide board before being provided with the air outlet slit of connection escaping pipe, air outlet slit；Burner hearth upper and lower surface is respectively arranged with soaking plate, and the outer level of soaking plate is inlaid with spiral electrothermal tube.The present invention is simple in construction, easy to operate, and rationally, temperature control is finer accurate, and ash blows better, and result of the test is reliable and stable for design science, and the harm of lead gas is preferably minimized, health and the dual purpose of environmental protection is reached.
Description
（One）Technical field
The present invention relates to Purity of Noble Metals detection device, more particularly to a kind of intelligent Fire Assaying cupel(lation) furnace.
（Two）Background technology
Fire assaying is a kind of dense poly- method of liquid-liquid high-temperature extraction, and method is quick, sample is decomposed completely, to various samples
It is adaptable.Fire assaying has the methods such as lead ensaying, antimony ensaying, determines the lead ensaying method of conventional classics the most during gold.
Fire Assaying（Lead ensaying）Method be it is a kind of gold is separated into the most frequently used simplicity with lead and means are efficiently separated, its key
Technology is that ash blows over journey, therefore also referred to as cupullation.Cupullation is a kind of ancient isolation technics, and its principle is；It will be wrapped in
Golden sample in lead foil, which is placed on cupel, to be placed in cupel(lation) furnace, at high temperature by melting and carrying out oxidation blowing.In air
Oxygen makes to melt in lead and golden sample impurity element oxidation generation oxide and then absorbed by cupel, gold and the silver added in advance be difficult by
Oxidation, forms more pure electrum grain and stays on cupel.
The gold ornament of current prevalence both at home and abroad is fashionable, various in style, and such as stars more than species, moulding is in different poses and with different expressions.
Its gold content as little as 9K（375‰）, up to 999.9 ‰, so that corresponding detection technique difficulty is greatly improved, it is this country
Corresponding examination criteria is formulated.But GB GB11887-2012《The regulation of jewellery Purity of Noble Metals and name》In explicitly point out
GB/T9288-2006《The measure cupullation of billon jewellery gold content（Fire assaying）》To specify gold content in billon jewellery
The referee method of analysis, it is applied to gold content 333.0 ‰~999.5 ‰.Thus fire assaying has been established in the field
Special status and importance.
Not yet there is domestic commercialization Fire Assaying cupel(lation) furnace to list so far through looking into domestic gold jewelry analysis field, gold jewelry
Middle Fire Assaying analysis is more to be replaced or is purchased import cupel(lation) furnace using domestic high temperature Muffle furnace.Domestic high temperature Muffle furnace is only capable of meeting temperature
Needs are spent, but ash can not be provided and blow over the oxidizing gas stream asked needed for journey, quality and effect that ash blows is reduced.Import cupel(lation) furnace
Only one brand is currently known to be available for choosing, and price is very high, up to domestic high temperature Muffle furnace thirtyfold, causes medium-sized and small enterprises difficult
To bear.The high domestic specialized Fire Assaying cupel(lation) furnace of current country's gold jewelry analysis field active demand cost performance, and this
Its performance of the equipment of application meets this requirement well.
（Three）The content of the invention
There is provided a kind of fine structure, environment protection health, long service life in order to make up the deficiencies in the prior art by the present invention
Intelligent Fire Assaying cupel(lation) furnace.
The present invention is achieved through the following technical solutions：
A kind of intelligent Fire Assaying cupel(lation) furnace, including console mode main body, it is characterised in that：The body top is provided with stove
Thorax, lower body part electrical control cabinet, the right outside of main body is provided with central controller；Lower body part is provided with inside connection burner hearth
Air inlet pipe, burner hearth rear portion is provided with gas guide board before being provided with the air outlet slit of connection escaping pipe, air outlet slit；Above and below burner hearth
Surface is respectively arranged with soaking plate, and the outer level of soaking plate is inlaid with spiral electrothermal tube.
The present invention is console mode all-in-one, and compact conformation, ratio rationally, is easy to mobile placement convenient.Burner hearth is filled up and down
There is soaking plate, the outer level of soaking plate inlays speciality spiral electrothermal tube, using radiant heating raising in-furnace temperature after energization, and non-electrical
Medium is vertically exposed to electrified regulation in burner hearth during heat；Radiant heating pattern, which can be effectively reduced, above and below the soaking plate of the present invention sets
Put elimination in-furnace temperature gradient so that furnace temperature all has good temperature uniform at its identical height of any point in whole stove
Property, the temperature difference is less than 2 degree in stove, and can receive preferable ash blows effect, and eliminates potential safety hazard；Gas guide board guides hot-air
Sink to cupel plate and play guide effect, form furnace air circulation passage.
The present invention, which has given prominence to the key points, aoxidizes the theory that ash blows, around controllable type furnace air gas circuit and Intelligent ash wind drift
Journey auto-controll operation program two principal themes, has carried out meticulous development, repetition test.Through the long-term a large amount of golden samples in enterprise laboratory
Working practice checking is examined, efficiency is blown with achieving satisfied achievement in terms of effect, environmental protection and production cost in ash, reaches
Expected purpose.
The present invention more excellent technical scheme be：
The outlet bottom of the tube is provided with collection lead box, the lead powder for depositing to get off in escaping pipe for collecting.
The special load sample platform of sample is provided with the middle part of the main body, can upwards be routed up when using, be easy to taking and placing sample.
Glass window is housed on the fire door of the burner hearth, can at any time observe and blow over journey with regulation and control ash, be easy to experimenter
Control to analysis result.
The air inlet pipe is arranged on air inlet pipe regulation guide rail, and air inlet pipe front end is provided with flow control valve, air inlet
Pipe rear end is connected to burner hearth bottom, can be conveniently adjusted position and the air inflow of air inlet pipe.
Outlet tube valve is installed in the escaping pipe, coordinates Flow-rate adjustment, is easy to the precipitation of lead powder dirt.
The spiral electrothermal tube, flow control valve and outlet tube valve connect respectively central controller realize it is higher
Automatic controlling level, the refinement of degree setting steps, specification understands easy to operate.
The present invention mentality of designing be：
（1）Controllable type air gas circuit；The need for blowing principle and energy-conservation heating according to oxidation ash, air duct is closed during heating
Energy-conservation heats up, and places sample and blows the unlatching of stage air passage with ash, the preheated air imported needed for oxidation devises for this
Outlet pipe with the admission line for being adjustable into tolerance and with switch.In furnace air passage, specially in burner hearth after
It has developed special gas flow guiding component before portion's air outlet slit, the component is to the inclined inclined-plane gas flow guiding in air duct direction
Plate, play the guiding role, and guiding hot-air sinks to pressing close to cupel plate.Furnace air gas circuit is formed after fire door is closed, makes to be placed on
The shot surface of golden sample is enclosed with cupel can touch the oxygen of abundance, be blown so as to complete oxidation ash.
Fire Assaying cupel(lation) furnace must be placed under strength exhaust hood.After fire door is closed, form empty in nearly two meters of long stoves
Gas gas circuit, is arranged on the escaping pipe on cupel(lation) furnace top and certain air draft is formd under exhaust hood strength pump drainage, whole empty
It is negative pressure from top to bottom in air circuit.Even without outside air draft, remain to produce in whole air duct certain naturally upward
Draft, so it is essential to carry out regulation and control to charge flow rate.
This air gas circuit air inlet pipe is provided with flow control valve on air inlet pipe regulation guide rail, and in air inlet pipe,
Position and the air inflow of air inlet pipe can be adjusted as needed.Escaping pipe is provided with escaping pipe controlled valve, coordinates charge flow rate to adjust
Section, is easy to control the sedimentation of oxidizing gas stream flow and lead powder dirt.
（2）Intelligent ash wind drift journey auto-controll operation program；The need for journey various change being blown over according to whole ash, with reference to
Oxidation ash blows operating process, in line with as much as possible by some principles for operating and being converted into automatic running and taking into account energy-conservation, design
Intelligentized grey wind drift journey auto-controll operation program is worked out.This program is that degree of specialization is high, the grey wind drift of domestic initiation
Process control software.Full Chinese touch screen operation interface, man-machine dialog interface is friendly, and specification understands simple and practical, experimental implementation step
Rapid refinement, any variable Fire Assaying experiment compiled, be easy to implement polytype sample of parameter.It is provided with program interface in real time
Curve is shown, program operation phase and parameter can be visually observed that.
Due to some operating procedures have been incorporated into operation program, so as to simplify artificial operation, work is effectively reduced strong
Degree and injury of the lead powder dirt to human body.
（3）Modularization chamber design；It is easy to the soaking plate of four walls inside maintenance maintenance, fast changeable burner hearth, solves
Burner hearth inside ceiling panel is easily by the problem of melt oxidation lead contamination hardly possible cleaning.Glass window is housed on fire door, can observe and adjust at any time
Control ash blows over journey, is easy to control of the experimenter to analysis result.
（4）Automatic control heater circuit；Using formula increase power control burner hearth heating rate is gradually passed stage by stage, effectively
The damage that high-power steep temperature rise is caused to electrothermal tube is avoided, the life-span of spiral electrothermal tube is extended, the event of equipment is reduced
Barrier rate and potential safety hazard, it is ensured that electrical safety.
The present invention is simple in construction, easy to operate, and rationally, temperature control is finer accurate, and ash blows better, experiment for design science
Reliable results are stable, and the harm of lead gas is preferably minimized, health and the dual purpose of environmental protection is reached.
（Four）Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the invention；
Fig. 2 is the A-A faces diagrammatic cross-section shown in Fig. 1.
In figure, 1 main body, 2 burner hearths, 3 air inlet pipe, 4 escaping pipes, 5 air outlet slits, 6 collection lead boxes, 7 soaking plates, 8 spiral electric heating
Pipe, 9 gas guide boards, 10 glass windows, 11 air inlet pipe regulation guide rail, 12 flow control valves, 13 outlet tube valves, 14 electricity
Gas switch board, 15 central controllers, the special load sample platform of 16 samples.
（Five）Embodiment
Accompanying drawing is a kind of specific embodiment of the invention.The embodiment includes console mode main body 1, and the top of main body 1 is set
Burner hearth 2 is equipped with, the lower electrical switch board 14 of main body 1, the right outside of main body 1 is provided with central controller 15；The bottom of main body 1 is provided with
The air inlet pipe 3 inside burner hearth 2 is connected, the rear portion of burner hearth 2 is provided with before the air outlet slit 5 of connection escaping pipe 4, air outlet slit 5 and set
There is gas guide board 9；The upper and lower surface of burner hearth 2 is respectively arranged with soaking plate 7, and the outer level of soaking plate 7 is inlaid with spiral electrothermal tube 8；It is described
The bottom of escaping pipe 4 is provided with collection lead box 6；The middle part of main body 1 is provided with the special load sample platform 16 of sample；The stove of the burner hearth 2
Glass window 10 is housed on door；The air inlet pipe 3 is arranged on air inlet pipe regulation guide rail 11, and the front end of air inlet pipe 3 is provided with
Flow control valve 12, the rear end of air inlet pipe 3 is connected to the bottom of burner hearth 2；Outlet tube valve 13 is installed in the escaping pipe 4；Institute
State spiral electrothermal tube 8, flow control valve 12 and outlet tube valve 13 and connect central controller 15 respectively.
The present invention is console mode all-in-one, and compact conformation, ratio rationally, is easy to movement, and placement is convenient.Overall dimensions
(mm):1670 × 870 × 900 (height × wide × depths)；Weight is about:330KG.Its structural design optimization, temperature adjustment control airway dysfunction is neat
Entirely, temperature indicates accurate with regulation and control（1200 DEG C of maximum temperature, temperature-controlled precision≤2 DEG C）, good heat insulating, furnace temperature fluctuation scope
It is small.Automatic controlling level is high, the refinement of program setting steps, and specification understands easy to operate.The electrum grain that ash is formed after blowing is outer
See and show that body is uniform, mellow and full full, sphere is bright and clean, and metal-like is strong.
The unique modularized design of burner hearth 2, is easy to the soaking plate 7 of four walls inside maintenance maintenance, fast changeable road side market pipe,
Burner hearth inside ceiling panel is solved easily by the problem of melt oxidation lead contamination hardly possible cleaning.When fire door is closed, the gas guide board of setting
9, it play the guiding role and guides hot-air in burner hearth 2 to sink to pressing close to cupel plate, forms furnace air gas circuit（See that arrow marks part）.
The wall of burner hearth 2 four has soaking plate 7, and the outside level of soaking plate 7 is inlayed special spiral electrothermal tube 8, radiated after energization using soaking plate 7
Heating improves in-furnace temperature, and non-perpendicular electrothermal device is directly exposed to electrified regulation in burner hearth 2.Such a soaking plate spoke about 7
In-furnace temperature gradient can be effectively reduced by penetrating mode of heating so that its horizontal plane furnace temperature of any point all has well in whole stove
2 DEG C of temperature difference ＜ in temperature homogeneity, stove, can receive preferable ash and blow effect, and eliminate potential safety hazard.Fire door is seen equipped with glass
Window 10 is examined, can at any time observe and blow over journey with regulation and control ash, be easy to control of the experimenter to analysis result.
Its major design scheme is：
（1）Console mode all-in-one, compact conformation ratio rationally, is easy to mobile placement convenient；
（2）Controllable type air gas circuit, the need for blowing principle and energy-conservation heating according to oxidation ash, closes air duct during heating
Energy-conservation is heated up, and passage is opened during placement sample and reduces injury of the lead to human body, ash blows the required air stream of stage importing oxidation, passed through
Special gas flow guiding component, its inclined-plane deflector plays guiding hot-air and sinks to pressing close to cupel plate, improves ash and blows effect, is formed
Furnace air gas circuit；
（3）Intelligent ash wind drift journey auto-controll operation program；Some operations are converted into automatically in line with as much as possible
The principle of energy-conservation is run and taken into account, intelligentized grey wind drift journey auto-controll operation program is worked out；
（4）The structure of modularization burner hearth 2；The inside ceiling panel of burner hearth 2 is solved easily by the problem of melt oxidation lead contamination hardly possible cleaning, is easy to
Maintenance maintenance；
（5）Automatic control heater circuit；Reduce the fault rate and potential safety hazard of equipment, it is ensured that electrical safety；
（6）The inwall of burner hearth 2 is regular oblong, is easy to form horizontal plane stratosphere.
The present invention meets GB GB/T 9288 comprehensively《The measure cupullation of billon jewellery gold content（Fire assaying）》
Technical requirements, highlight the theory blown of oxidation ash, Fire Assaying ash blows efficiency and greatly improved, and overall performance is significantly better than common height
Warm Muffle furnace, it is more applicable than external similar cupel(lation) furnace, it is first domestic professional intelligent Fire Assaying cupel(lation) furnace.
Claims (9)
1. a kind of intelligent Fire Assaying cupel(lation) furnace, including console mode main body（1）, it is characterised in that：The main body（1）Top is set
There is burner hearth（2）, main body（1）Bottom is provided with electrical control cabinet（14）, main body（1）Right outside is provided with central controller（15）；
Main body（1）Bottom is provided with connection burner hearth（2）Internal air inlet pipe（3）, burner hearth（2）Rear portion is provided with connection escaping pipe（4）'s
Air outlet slit（5）, air outlet slit（5）Before be provided with gas guide board（9）；Burner hearth（2）Upper and lower surface is respectively arranged with soaking plate（7）,
Soaking plate（7）Outer level is inlaid with spiral electrothermal tube（8）.
2. intelligent Fire Assaying cupel(lation) furnace according to claim 1, it is characterised in that：The escaping pipe（4）Bottom is set
There is collection lead box（6）.
3. intelligent Fire Assaying cupel(lation) furnace according to claim 1, it is characterised in that：The main body（1）Middle part is provided with
The special load sample platform of sample（16）.
4. intelligent Fire Assaying cupel(lation) furnace according to claim 1, it is characterised in that：The burner hearth（2）Fire door on fill
There is glass window（10）.
5. intelligent Fire Assaying cupel(lation) furnace according to claim 1, it is characterised in that：The air inlet pipe（3）Be arranged on into
Tracheae adjusts guide rail（11）On, and air inlet pipe（3）Front end is provided with flow control valve（12）, air inlet pipe（3）Rear end is connected to
Burner hearth（2）Bottom.
6. intelligent Fire Assaying cupel(lation) furnace according to claim 1, it is characterised in that：The escaping pipe（4）On be provided with
Outlet tube valve（13）.
7. intelligent Fire Assaying cupel(lation) furnace according to claim 1, it is characterised in that：The spiral electrothermal tube（8）Connection
Central controller（15）.
8. intelligent Fire Assaying cupel(lation) furnace according to claim 5, it is characterised in that：The flow control valve（12）Even
Connect central controller（15）.
9. intelligent Fire Assaying cupel(lation) furnace according to claim 6, it is characterised in that：The outlet tube valve（13）Connection
Central controller（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610117155.2A CN105651929B (en) | 2016-03-02 | 2016-03-02 | Intelligent Fire Assaying cupel(lation) furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610117155.2A CN105651929B (en) | 2016-03-02 | 2016-03-02 | Intelligent Fire Assaying cupel(lation) furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105651929A CN105651929A (en) | 2016-06-08 |
| CN105651929B true CN105651929B (en) | 2017-07-18 |
Family
ID=56492868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610117155.2A Active CN105651929B (en) | 2016-03-02 | 2016-03-02 | Intelligent Fire Assaying cupel(lation) furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105651929B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490653A (en) * | 2017-03-10 | 2017-12-19 | 北矿检测技术有限公司 | A kind of cupel(lation) furnace |
| CN110186281B (en) * | 2019-06-25 | 2024-03-15 | 北矿检测技术股份有限公司 | Controllable air supplementing type gray blowing furnace |
| CN110579563A (en) * | 2019-10-28 | 2019-12-17 | 紫金铜业有限公司 | novel cupellation furnace for simultaneously and efficiently detecting gold and silver samples by fire assaying method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US704198A (en) * | 1901-09-24 | 1902-07-08 | David Laird | Cupellation-furnace. |
| CN2235106Y (en) * | 1995-06-09 | 1996-09-11 | 北京天翼科贸公司 | Electric-heating diaphragm gradient temperature-controlling uniform coated stove |
| CN1945273A (en) * | 2006-09-28 | 2007-04-11 | 江西铜业集团公司贵冶分公司 | Method for detecting high content gold by fire assaying |
| CN201581120U (en) * | 2009-11-25 | 2010-09-15 | 郴州市金贵银业股份有限公司 | Silver smelting furnace |
| CN201935562U (en) * | 2011-03-13 | 2011-08-17 | 杨龙安 | Oxygen filling, warming, strengthening, metal melting, fuming and volatilizing device of side-blown smelting furnace |
| CN202898496U (en) * | 2012-11-13 | 2013-04-24 | 永兴县庚仁银业有限责任公司 | Cupellation furnace |
| CN103629928A (en) * | 2012-08-27 | 2014-03-12 | 兴化市新天地不锈钢制品有限公司 | Composition testing high-temperature furnace |
| CN203533578U (en) * | 2013-09-11 | 2014-04-09 | 林旭虹 | Boiler grate dust removal and purging device |
| CN204705651U (en) * | 2015-05-12 | 2015-10-14 | 深圳市周大福珠宝制造有限公司 | The sample introduction car of Fire Assaying assay equipment |
| CN205643269U (en) * | 2016-03-02 | 2016-10-12 | 祝培明 | Intelligent fiery ensaying cupellation furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1540299C (en) * | 1987-12-11 | 1993-12-30 | Центральный научно-исследовательский геологоразведочный институт цветных и благородных металлов | Method and apparatus for cupellation of crude leads |
-
2016
- 2016-03-02 CN CN201610117155.2A patent/CN105651929B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US704198A (en) * | 1901-09-24 | 1902-07-08 | David Laird | Cupellation-furnace. |
| CN2235106Y (en) * | 1995-06-09 | 1996-09-11 | 北京天翼科贸公司 | Electric-heating diaphragm gradient temperature-controlling uniform coated stove |
| CN1945273A (en) * | 2006-09-28 | 2007-04-11 | 江西铜业集团公司贵冶分公司 | Method for detecting high content gold by fire assaying |
| CN201581120U (en) * | 2009-11-25 | 2010-09-15 | 郴州市金贵银业股份有限公司 | Silver smelting furnace |
| CN201935562U (en) * | 2011-03-13 | 2011-08-17 | 杨龙安 | Oxygen filling, warming, strengthening, metal melting, fuming and volatilizing device of side-blown smelting furnace |
| CN103629928A (en) * | 2012-08-27 | 2014-03-12 | 兴化市新天地不锈钢制品有限公司 | Composition testing high-temperature furnace |
| CN202898496U (en) * | 2012-11-13 | 2013-04-24 | 永兴县庚仁银业有限责任公司 | Cupellation furnace |
| CN203533578U (en) * | 2013-09-11 | 2014-04-09 | 林旭虹 | Boiler grate dust removal and purging device |
| CN204705651U (en) * | 2015-05-12 | 2015-10-14 | 深圳市周大福珠宝制造有限公司 | The sample introduction car of Fire Assaying assay equipment |
| CN205643269U (en) * | 2016-03-02 | 2016-10-12 | 祝培明 | Intelligent fiery ensaying cupellation furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105651929A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105651929B (en) | Intelligent Fire Assaying cupel(lation) furnace | |
| CN202246831U (en) | Complete set of sealed box type gas carbonitriding furnace equipment | |
| CN209588688U (en) | It is a kind of convenient for cooling cabinet-type electric furnace | |
| CN207074008U (en) | High temperature elevator furnace | |
| CN205643269U (en) | Intelligent fiery ensaying cupellation furnace | |
| CN102883490A (en) | Glass die heating device | |
| CN204854345U (en) | Energy -conserving cabinet -type electric furnace | |
| CN110132708A (en) | A kind of new type auto lifting nitrogen evaporator | |
| CN204903027U (en) | Thermocouple preheating device | |
| CN205484240U (en) | Fire ensaying cupellation furnace is with controllable type air gas circuit | |
| CN207280206U (en) | A kind of novel housing of yoke electric furnace | |
| CN205821404U (en) | A kind of aluminium alloy aging furnace with safeguard function | |
| CN205341797U (en) | Forge to beat and use vacuum insulation induction heating furnace | |
| CN210826265U (en) | Controlled atmosphere multipurpose furnace for heat treatment | |
| CN207845704U (en) | A kind of metallic heat treating furnace | |
| CN206279248U (en) | Uniform heating type low temperature oven | |
| CN204321195U (en) | A kind of debinding furnace | |
| CN109945642B (en) | Rapid sintering furnace and sintering process for metal oxide ceramic material | |
| CN201390701Y (en) | Annealing furnace with baffle board heating device | |
| CN107447184B (en) | A kind of convection type gas carbruizing furance | |
| CN205741087U (en) | Ou Ye baking oven furnace apparatus | |
| CN201122463Y (en) | Anti-overflow equipment for oven mouth of enamelling machine | |
| CN206762920U (en) | A kind of full-automatic oil bath heating device | |
| CN206279235U (en) | Natural gas-solid smelting furnace | |
| CN2802312Y (en) | Microwave oven with bake function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |