CN105483592A - Technology for producing long-life insulation mirror plate based on impregnation technology - Google Patents
Technology for producing long-life insulation mirror plate based on impregnation technology Download PDFInfo
- Publication number
- CN105483592A CN105483592A CN201510910651.9A CN201510910651A CN105483592A CN 105483592 A CN105483592 A CN 105483592A CN 201510910651 A CN201510910651 A CN 201510910651A CN 105483592 A CN105483592 A CN 105483592A
- Authority
- CN
- China
- Prior art keywords
- powder
- melting
- aluminium
- runner plate
- stainless steel
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a technology for producing a long-life insulation mirror plate based on an impregnation technology. The technology comprises the steps that 1, aluminum is molten in the inert gas atmosphere; 2, a stainless steel plate is impregnated into the aluminum and taken out to be cooled; 3, first powder is added into the aluminum and heated to be molten, and first melting mixed liquor is obtained; 4, the stainless steel plate is impregnated into the first melting mixed liquor and taken out to be cooled; 5, second powder is added into the first melting mixed liquor and heated to be molten, and second melting mixed liquor is obtained; and 6, the stainless steel plate is impregnated into the second melting mixed liquor and taken out to be cooled, and the insulation mirror plate is obtained after oxidization. The first powder comprises, by weight, 50 parts of titanium and 6-8 parts of silicon. The second powder comprises, by weight, 50 parts of magnesium and 2-4 parts of manganese. According to the scheme, the conventional impregnation technology is improved, high-frequency use of the manufactured mirror plate can be guaranteed under the conditions of high temperature and high pressure, no expansion or shrinkage happens, the surface is flat and resistant to wear, and no sinking happens.
Description
Technical field
The present invention relates to a kind of production technique of insulcrete, be specifically related to a kind of production technique based on the high life insulation runner plate containing soaking technology.
Background technology
When the main body base material on manufacturing line road plate (PCB), need to use electric press that materials different for multilayer is carried out pressing, the principle of work of this electric press is by the processed tacky resin material of Copper Foil (or aluminium foil) conduction heating, and by applying certain pressure, multilayer material is pressure bonded to not a half hour, thus obtained board substrate, and in use electric press bonding processes, for cost consideration, single stitching operation often needs the multi-disc of pressing simultaneously board substrate, and in order to make multi-disc board substrate when pressing, be not affected each other, need them superimposed, and insert a kind of special insulcrete between which, it has insulation, heat transfer, the effect supporting and be separated, this special insulcrete with superelevation planeness is called runner plate.
Runner plate and the maximum difference of common insulcrete are exactly the coating that there is a kind of densification on its surface, the performance of this coating on runner plate has great impact, in process for pressing, very high to the performance requriements of runner plate, electric press is when operating, both heat of high temperature (being greater than 300 DEG C) had been produced, there is again very strong pressure (being greater than 50MPa), this just needs runner plate to possess outstanding resistance to hot press performance, namely runner plate needs to have very high limit tolerable temperature and limit tolerance pressure, and, more weight is, the top coat of runner plate still must can keep flat smooth very after repeatedly hot pressing, surface is depression not, there is not breathing, and in existing technique, also cannot realize this requirement at present, after the runner plate of prior art generally about can use about 100 times at normal temperatures, its surface just starts to occur depression, runner plate is caused to lose efficacy, and at high temperature also only can use and just lost efficacy for about 50 times.And in the major cause that prior art cannot meet this requirement be preparation technology's also prematurity of this coating.
Summary of the invention
For the deficiencies in the prior art part, the object of the present invention is to provide a kind of production technique based on the high life insulation runner plate containing soaking technology, the runner plate that explained hereafter goes out thus can realize the use ensureing high frequency time under the strong condition of High Temperature High Pressure, not breathing, surfacing is wear-resisting, does not cave in.
Technical scheme of the present invention is summarized as follows:
Based on a production technique for the high life insulation runner plate containing soaking technology, comprising:
S1: in atmosphere of inert gases, is heated to molten state by aluminium;
S2: stainless steel plate is immersed in the aluminium of melting completely, takes out cooling subsequently;
S3: the first powder is added in the aluminium of melting, and continue heating until the first powder body melting, mixing, obtains the first melting mixing liquid; Wherein, the weight ratio of described first powder and aluminium is 15 ~ 16: 100;
S4: stainless steel plate is immersed completely in the first melting mixing liquid, take out cooling subsequently;
S5: the second powder is added in the first melting mixing liquid, and continue heating until the second powder body melting, mixing, obtains the second melting mixing liquid; Wherein, the weight ratio of described second powder and aluminium is 5 ~ 6: 100;
S6: immersed completely by stainless steel plate in the second melting mixing liquid, take out cooling subsequently, namely obtains insulation runner plate after oxidation;
Wherein, described first powder comprises following material:
Titanium 50 weight part;
Silicon 6 ~ 8 weight part;
Described second powder comprises following material:
Magnesium 50 weight part;
Manganese 2 ~ 4 weight part.
Preferably, the described production technique based on the high life insulation runner plate containing soaking technology, wherein, described first powder also comprises the scandium of 2 ~ 4 weight parts.
Preferably, the described production technique based on the high life insulation runner plate containing soaking technology, wherein, described first powder also comprises the beryllium of 6 ~ 8 weight parts.
Preferably, the described production technique based on the high life insulation runner plate containing soaking technology, wherein, described second powder also comprises the tin of 4 ~ 6 weight parts.
Preferably, the described production technique based on the high life insulation runner plate containing soaking technology, wherein, described second powder also comprises the zinc of 2 ~ 4 weight parts.
The invention has the beneficial effects as follows: this case, by improving containing soaking technology routine, obtains the production technique of a set of brand-new runner plate coating; By gradation impregnation and the different types of coating fused solution of use, to reduce the internal stress after coating attachment to greatest extent, to improve stability and the firmness of coating, make the runner plate prepared can realize ensureing the use of high frequency time under the strong condition of High Temperature High Pressure, not breathing, surfacing is wear-resisting, does not cave in.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Embodiment 1
This case proposes the production technique based on the high life insulation runner plate containing soaking technology of an embodiment, comprising:
S1: in atmosphere of inert gases, is heated to molten state by aluminium;
S2: stainless steel plate is immersed in the aluminium of melting completely, takes out cooling subsequently;
S3: the first powder is added in the aluminium of melting, and continue heating until the first powder body melting, mixing, obtains the first melting mixing liquid; Wherein, the weight ratio of the first powder and aluminium is 15 ~ 16: 100;
S4: stainless steel plate is immersed completely in the first melting mixing liquid, take out cooling subsequently;
S5: the second powder is added in the first melting mixing liquid, and continue heating until the second powder body melting, mixing, obtains the second melting mixing liquid; Wherein, the weight ratio of the second powder and aluminium is 5 ~ 6: 100;
S6: immersed completely by stainless steel plate in the second melting mixing liquid, take out cooling subsequently, namely obtains insulation runner plate after oxidation;
Wherein, the first powder comprises following material:
Titanium 50 weight part;
Silicon 6 ~ 8 weight part;
Second powder comprises following material:
Magnesium 50 weight part;
Manganese 2 ~ 4 weight part.
In the prior art, conventional is by after disposable for various powder melting containing soaking technology, stainless steel plate is immersed, takes out subsequently, make its surface form the oxide compound of respective metal powder by oxidation means, although the working method of this coating more for convenience, but some shortcoming, the internal stress of the coating namely obtained by this method is comparatively large, is running under High Temperature High Pressure, coating is yielding, and breathing or depression occur.
This case is by reducing the internal stress of coating as much as possible by the mode of repeatedly impregnation after the melting in batches of various powder, such as, the stress that aluminium produces is minimum, best with the compatibility of other substrates, therefore, by aluminium melting at first, by stainless steel impregnation wherein plated aluminum, the first melting mixing liquid of aluminium+the first powder is immersed subsequently at stainless steel plate surface being covered with aluminium, the mixolimnion of plated aluminum+the first powder, note, it not now the mixolimnion of plated aluminum+the first powder on aluminium lamination, due to the introducing of the first powder, make the temperature of the first melting mixing liquid higher than the temperature (fusing point of aluminium is 660 DEG C) of the aluminium of melting, therefore, after the stainless steel plate being covered with aluminium when surface immerses the first melting mixing liquid, original aluminium lamination is melted, and incorporated in the first melting mixing liquid together, therefore after this step, what obtain is the mixolimnion of stainless steel-based flaggy+aluminium and the first powder, in like manner, after introducing second powder, what obtain is stainless steel-based flaggy+aluminium, the mixolimnion of the first powder and the second powder, final product is single coating structure but not three coating structures.When immersion first melting mixing liquid, the effect of aluminium just looks like the person of leading the way, aluminium and the first powder is led to move towards stainless steel plate, aluminium and the first powder and stainless combination is made to be unlikely to too lofty, in like manner, when immersion second melting mixing liquid, the effect of aluminium and the first powder is also as the same position person of leading the way, lead aluminium, first powder and the second powder move towards stainless steel plate, make aluminium, first powder and the second powder and stainlessly to reduce in conjunction with potential energy, final performance is exactly the adsorptive power increase between coating and substrate, the stress of coat inside reduces, the physicals of coating is made to obtain General Promotion.
But, and the coating formula of not all is all applicable to this technique, in other words, various powders in the formula of a prior art are gone according to the technique of this case the melting being divided into multiple batches, impregnation, the product finally obtained also and not all can produce positive effect, in formula, the combination of various powder and the effect of the finished product have obviously uncertain, this case only finds that the combination of several groups of the first powders and the second powder can produce positive improvement effect with aluminium and stainless steel at present, the combination of other materials is then almost as good as with the runner plate performance that explained hereafter goes out routinely.Such as, by the silicon in above-mentioned first powder and the manganese reversing of position in the second powder, and respective addition is constant, although the component of final coating is all identical, but the physicals of the coating obtained exists obvious difference, the performance of the runner plate obtained after reversing of position obviously declines.
In addition, first powder and the second powder also should be limited relative to the weight ratio of aluminium, exceed the scope of restriction, will exceed the regulating power scope of aluminium, make aluminium effectively cannot discharge the dissolving potential energy of the first powder and the second powder, cannot the internal stress of substantial reduction coating.Equally, in the first powder and the second powder, the ratio of composition also should be limited separately.
In first powder and the second powder, the weight ratio of each metal-powder just embodies the ratio of himself formula, does not have direct correlation, do not belong to same weight unit with the first powder and the second powder relative to the part by weight of aluminium.
In S6, the method for oxidation belongs to prior art, and object makes metal after oxidation, becomes its corresponding metal oxide, thus realize insulation function.The method not circumscribed of this oxidation, has multiple method, such as, can be positioned in air, the automatic oxidation by air of meeting, just speed is comparatively slow, and hyperbaric oxygen also can be adopted to accelerate this kinds of oxidation reaction, or adopts the method for strong acid oxidation or oxygenant passivation to make metal become its oxide compound.
Embodiment 2
On the basis of embodiment 1, the first powder also comprises the scandium of 2 ~ 4 weight parts.The recipe ratio of this technique to the first powder is harsher, and limited amount scandium only can be allowed to be introduced into.Scandium can regulate the solidification rate of coating, reduces the contraction potential energy of coating when cooling, thus can reduce the breathing rate of runner plate.If but scandium is placed in the second powder, then will the stress of coating sharply be increased.
Embodiment 3
On the basis of embodiment 2, the first powder also comprises the beryllium of 6 ~ 8 weight parts.The introducing of beryllium can not cause the increase of coating stress, and effectively can improve coating compressive property at high temperature, and runner plate hot pressing number of times is increased dramatically.If but beryllium is placed in the second powder, then will the stress of coating be increased.
Embodiment 4
On the basis of embodiment 1, the second powder also comprises the tin of 4 ~ 6 weight parts.Limited amount tin can not cause the change of stress, and meanwhile, tin can regulate the mobility of mixed powder fused solution, and when making stainless steel depart from melting liquid level after impregnation, obtain higher planeness, this point is very important to the performance of runner plate.If tin to be placed in the first powder, cannot be brought into play causing this function of tin.
Embodiment 5
On the basis of embodiment 4, the second powder also comprises the zinc of 2 ~ 4 weight parts.Limited amount zinc can not cause the change of stress, and meanwhile, zinc with the oxidation potential energy of form release coat when oxidized of heat energy or mechanical energy, thus can prevent metal-powder its internal stress expansion out of control after becoming oxide compound to a certain extent.
Comparative example 1
By the first powder in embodiment 1 and the second powder transposition.
Comparative example 2
By embodiment 1, the magnesium transposition in the titanium in the first powder and the second powder, comprises consumption.
Comparative example 3
By embodiment 1, the manganese transposition in the silicon in the first powder and the second powder, comprises consumption.
Comparative example 4
Step S2 in embodiment 1 is saved.
Comparative example 5
Step S2 in embodiment 1 and S4 is saved.
The performance perameter of the scheme gained runner plate adopting different embodiment and comparative example listed respectively by table one.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details.
Claims (5)
1., based on a production technique for the high life insulation runner plate containing soaking technology, comprising:
S1: in atmosphere of inert gases, is heated to molten state by aluminium;
S2: stainless steel plate is immersed in the aluminium of melting completely, takes out cooling subsequently;
S3: the first powder is added in the aluminium of melting, and continue heating until the first powder body melting, mixing, obtains the first melting mixing liquid; Wherein, the weight ratio of described first powder and aluminium is 15 ~ 16: 100;
S4: stainless steel plate is immersed completely in the first melting mixing liquid, take out cooling subsequently;
S5: the second powder is added in the first melting mixing liquid, and continue heating until the second powder body melting, mixing, obtains the second melting mixing liquid; Wherein, the weight ratio of described second powder and aluminium is 5 ~ 6: 100;
S6: immersed completely by stainless steel plate in the second melting mixing liquid, take out cooling subsequently, namely obtains insulation runner plate after oxidation;
Wherein, described first powder comprises following material:
Titanium 50 weight part;
Silicon 6 ~ 8 weight part;
Described second powder comprises following material:
Magnesium 50 weight part;
Manganese 2 ~ 4 weight part.
2. the production technique based on the high life insulation runner plate containing soaking technology according to claim 1, it is characterized in that, described first powder also comprises the scandium of 2 ~ 4 weight parts.
3. the production technique based on the high life insulation runner plate containing soaking technology according to claim 2, it is characterized in that, described first powder also comprises the beryllium of 6 ~ 8 weight parts.
4. the production technique based on the high life insulation runner plate containing soaking technology according to claim 1, it is characterized in that, described second powder also comprises the tin of 4 ~ 6 weight parts.
5. the production technique based on the high life insulation runner plate containing soaking technology according to claim 4, it is characterized in that, described second powder also comprises the zinc of 2 ~ 4 weight parts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510910651.9A CN105483592A (en) | 2015-12-10 | 2015-12-10 | Technology for producing long-life insulation mirror plate based on impregnation technology |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510910651.9A CN105483592A (en) | 2015-12-10 | 2015-12-10 | Technology for producing long-life insulation mirror plate based on impregnation technology |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105483592A true CN105483592A (en) | 2016-04-13 |
Family
ID=55670855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510910651.9A Pending CN105483592A (en) | 2015-12-10 | 2015-12-10 | Technology for producing long-life insulation mirror plate based on impregnation technology |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105483592A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07186167A (en) * | 1993-12-28 | 1995-07-25 | Ibiden Co Ltd | Dummy plate of press apparatus for forming laminated base sheet |
JPH11279735A (en) * | 1998-03-27 | 1999-10-12 | Nisshin Steel Co Ltd | Aluminum-silicon-magnesium-zinc series hot dip aluminum base plated steel sheet |
CN101570397A (en) * | 2009-06-12 | 2009-11-04 | 东华大学 | Porcelain enamel with superior adherence and acid resistance simultaneously and preparation method thereof |
CN102070299A (en) * | 2009-11-23 | 2011-05-25 | 中国科学院过程工程研究所 | Protective technology of stainless steel high-temperature surface |
CN104927414A (en) * | 2015-05-22 | 2015-09-23 | 苏州市嘉明机械制造有限公司 | Insulating coating used for protecting mirror plate |
-
2015
- 2015-12-10 CN CN201510910651.9A patent/CN105483592A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07186167A (en) * | 1993-12-28 | 1995-07-25 | Ibiden Co Ltd | Dummy plate of press apparatus for forming laminated base sheet |
JPH11279735A (en) * | 1998-03-27 | 1999-10-12 | Nisshin Steel Co Ltd | Aluminum-silicon-magnesium-zinc series hot dip aluminum base plated steel sheet |
CN101570397A (en) * | 2009-06-12 | 2009-11-04 | 东华大学 | Porcelain enamel with superior adherence and acid resistance simultaneously and preparation method thereof |
CN102070299A (en) * | 2009-11-23 | 2011-05-25 | 中国科学院过程工程研究所 | Protective technology of stainless steel high-temperature surface |
CN104927414A (en) * | 2015-05-22 | 2015-09-23 | 苏州市嘉明机械制造有限公司 | Insulating coating used for protecting mirror plate |
Non-Patent Citations (1)
Title |
---|
高秋志等: ""线材热浸镀galfan单、双镀层结构及力学性能研究"", 《材料保护》 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108441827A (en) | Aluminium-scandium alloy target preparation method | |
CN103146962B (en) | Body of a motor car high-perforance compression casting aluminium alloy and preparation method thereof | |
CN104927414A (en) | Insulating coating used for protecting mirror plate | |
CN106799496A (en) | A kind of graphite and alusil alloy composite electron encapsulating material and preparation method thereof | |
CN104893372A (en) | High-temperature-resistant insulating coating for runner plate | |
CN104878384A (en) | Mirror plate with long service life and high temperature resistance | |
CN105483592A (en) | Technology for producing long-life insulation mirror plate based on impregnation technology | |
CN105420655A (en) | Insulating thrust runner production process based on impregnation process | |
CN105369175A (en) | Production technology of anti-sinking insulating thrust runner collar based on impregnation technology | |
CN105349929A (en) | Production process of low-dilatation and low-shrinkage insulated mirror boards based on impregnation process | |
CN105483593A (en) | Technology for producing hot-pressing-resisting insulation mirror plate based on impregnation technology | |
CN105517334A (en) | Impregnation technology based production process of high-strength insulation runner plate | |
CN105349932A (en) | Manufacturing method for insulated mirror boards based on plasma spraying process | |
KR850004121A (en) | Composite bearing material and its manufacturing method | |
CN105568203A (en) | Plasma-spray-based manufacturing method of scratch-resistant insulating mirror plate | |
CN105420660A (en) | Abrasion-resistant insulating thrust runner manufacturing method based on plasma spraying | |
CN104862690A (en) | Long-life sinking-preventing insulating coating for mirror plate | |
CN107937790A (en) | A kind of alumina-based ceramic metal material and preparation method thereof | |
CN106676236A (en) | SiC-MgO-SiAlON ordinary steel heat treatment antioxidant coating and application method thereof | |
CN106634559A (en) | Al2O3-MgO-SiAlON common steel heat treatment anti-oxidation coating and use method thereof | |
CN105154690A (en) | Preparation method of high-temperature-resistant titanium-aluminum-based alloy material | |
CN105555026A (en) | Wear-resistant insulating mirror plate manufacturing technique based on technology of impregnation | |
CN105349931A (en) | Manufacturing method for low-dilatation and low-shrinkage insulated mirror boards based on plasma spraying | |
CN105506700A (en) | Wear-resisting insulation thrust runner collar preparation technology | |
CN108330410A (en) | A kind of preparation method of chemical machinery corrosion-proof steel pipe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160413 |
|
WD01 | Invention patent application deemed withdrawn after publication |