CN104498678B - Graphene solid quenching medium and preparation method and application - Google Patents
Graphene solid quenching medium and preparation method and application Download PDFInfo
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Abstract
The invention discloses a kind of Graphene solid quenching medium, include by weight: granularity is Graphene 0-10 part of 0.1 micron, granularity is Graphene 0-10 part of 0.5 micron, granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 20 microns, and granularity is Graphene 0-50 part of 30 microns, and granularity is Graphene 0-10 part of 40 microns, granularity is Graphene 10-90 part of 50 microns, and granularity is copper powder 10-60 part of 100-1000 micron。Preparation method, first, by the micro powder granule of Graphene processing to required granularity；Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper powder material。Graphene solid quenching medium is applied in the quenching cooling of metal parts。This cooling medium can meet the requirement of metal parts mechanical performance and deformation accuracy。
Description
Technical field
The present invention relates to a kind of Graphene solid quenching medium and preparation method and application。
Background technology
The various parts overwhelming majority of composition mechanized equipment are required for just possessing the physics required by people, chemistry and mechanical property through quenching and tempering process。
Quenching process is that steel-iron components is heated to high temperature (> 850 DEG C) carry out austenitizing, then it is immediately placed in cooling medium (water, oil), wish, in very short time (0～several seconds), high temperature (850 DEG C～1050 DEG C) metal parts is cooled to about 300 DEG C, to avoid the austenite transformation to non-martensite；Below 300 DEG C, it is desirable to be cooled to room temperature with cooling rate more slowly, deformation that structural stress during to avoid from austenite to martensite transfor mation and thermal stress cause and cracking。Only meet such condition, the mechanical performance being just satisfied with most and the parts of minimal deformation。
Traditional liquid hardening cooling medium generally has two classes: a class is simple tap water or the water-based hardening liquid containing various additives；Another kind of is simple mineral oil or the mineral oil containing various additives。
The cooling characteristics of water is: not enough in hot stage (steam blanket) cooling capacity, too high in cold stage cooling capacity, therefore, handled part had both easily produced soft spots, has again very big deformation, even ftractures。After adding various additive in water, this situation makes moderate progress, but effect is unsatisfactory。And in use, additive therein is susceptible to chemical reaction and changes character thus changing the characteristic of water-based hardening liquid, thus in use needs its aged deterioration situation of close tracking and monitoring, uses and manages relatively costly。
The cooling characteristics of oil is: compare cooling characteristics slowly although having at cold stage, but is also significantly less than the expected value of people in the cooling capacity of hot stage。Little at the parts quenching deformation ratio water of oil quenching, but there is lower hardness, the defect that quench-hardened case is shallower。After adding various additive in oil, this situation makes moderate progress, but effect is unsatisfactory。And in use, additive therein is susceptible to chemical reaction and changes character thus changing the characteristic of oil base quenching liquid, thus in use needs its aged deterioration situation of close tracking and monitoring, uses and manages relatively costly。
In a word, above-mentioned quenching medium has the disadvantage in that
The shortcoming of water:
High temperature section cooling rate is slow, and low-temperature zone cooling rate is fast, causes part soft spots and strain cracking, and percent defective is significantly high。Various water-based hardening liquids easily produce to go bad, aging, poisonous, irritant, have pollution etc.。It addition, the cooling characteristics of water and water-based hardening liquid is too sensitive to the change of water temperature, this is the key factor causing being deformed with the part of step, groove and hole class。
The shortcoming of oil:
High temperature section cooling is slow, a lot of steel grades is quenched and does not get angry；Easily occur cracking and polymerization and oxidation deterioration, easily aging, workpiece drag-out lossy serious, quenching time oil smoke is seriously polluted greatly, production environment severe, costly。
Above-mentioned medium common defects also has: rotten and aging in order to tackle, and need to often measure viscosity, acid number, ash, composition, cooling towers group and it is frequently necessary to whole updating quenching liquid etc., causing and use and manage cost height。
Problem on deformation produced by traditional liquid cooling medium can also be tolerated for the part that some precision are relatively low, and for modern substantial amounts of precision manufactureing, owing to the material property of traditional liquid cooling medium is determined, no matter add the particular attribute which kind of additive is also difficult to change its liquid substance when cooling, thus its quenching cooling characteristics and stress deformation effect are difficult to reach gratifying effect, although its deficiency is made moderate progress by various additives, but simultaneously with side effect。
Chinese patent application CN104059618A discloses a kind of electromotor graphene oxide water-free cooling and preparation method thereof, graphene oxide that propylene glycol that electromotor graphene oxide water-free cooling is 30～65% by the ethylene glycol that percentage by weight is 30～65%, percentage by weight, percentage by weight are 0.2～3%, percentage by weight be 0.2～2% organic silicon defoamer and the composite corrosion inhibitor that percentage by weight is 0.7～8% be mixed and stirred for uniformly to dissolving and obtaining water-free cooling。In this coolant not moisture, and have multiple components mixed configuration to form, cost is high, and stability is poor, only can be suitably used for electromotor, and the scope of application is narrow。
Summary of the invention
It is an object of the invention to as overcoming above-mentioned the deficiencies in the prior art, a kind of Graphene solid quenching medium and preparation method and application are provided, adopt this Graphene solid quenching medium can meet metal parts, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
For achieving the above object, the present invention adopts following technical proposals:
A kind of Graphene solid quenching medium, is mixed to form by following varigrained Graphene by weight: granularity is 0.01 micron 10 parts, and granularity is 0.1 micron 10 parts, and granularity is 10 microns 10 parts, and granularity is 50 microns 10 parts, and granularity is 100 microns 50 parts。
Preferably, include by weight: granularity is Graphene 0-10 part of 0.1 micron, granularity is Graphene 0-10 part of 0.5 micron, granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 50 microns, and granularity is Graphene 0-50 part of 100 microns, and granularity is Graphene 0-10 part of 500 microns, granularity is Graphene 10-90 part of 100 microns, and granularity is copper powder 10-60 part of 100-1000 micron。
Preferably, include by weight: granularity is Graphene 0-10 part of 1 micron, granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 30 microns, granularity is Graphene 0-10 part of 50 microns, granularity is Graphene 0-10 part of 100 microns, and granularity is Graphene 50-90 part of 100 microns, and granularity is the aluminium powder 10 parts of 500-1000 micron。
Preferably, include by weight: granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 20 microns, granularity is Graphene 0-10 part of 30 microns, granularity is Graphene 0-10 part of 40 microns, granularity is Graphene 50-90 part of 50 microns, and granularity is 10 parts of the argentum powder of 1000 microns。
Preferably, including by weight: granularity is the Graphene 10 parts of 20 microns, granularity is the Graphene 10 parts of 30 microns, and granularity is the Graphene 50 parts of 40 microns, and granularity is the copper powder 20 parts of 1000 microns, and granularity is the aluminium powder 10 parts of 100 microns。
Further, the preparation method of any of the above-described technical scheme,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by fully dispersed in a liquid for Graphene solid micro-powder granule；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally Graphene solid micro-powder granule is mixed homogeneously with the varigrained silver of different proportion or copper or aluminium powder material respectively；Or mix homogeneously with copper and aluminium powder material。
Further, the Graphene solid quenching medium any of the above-described technical scheme prepared is applied in the quenching cooling of metal parts。
In the material that it has been found that at present and utilize, Graphene has the maximum capacity of heat transmission。
The heat conductivity of various materials
| Material | Heat conductivity w/mk |
| Graphene | 4800--5300 |
| Silver | 429 |
| Copper | 401 |
| Aluminum | 237 |
| Gold | 317 |
| Water | 0.54 |
| Transformer oil | 0.128 |
| Diesel oil | 0.12 |
By numerical value in above table it can be seen that the capacity of heat transmission of Graphene is 12 times of silver, 13 times of copper, more than 9260 times of water, 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and namely the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。Therefore, Graphene is best suited for as cooling medium。
Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
In order to meet cooling performance requirement to different materials, difformity parts, during preparation, adopt the materials such as adding the metallic aluminium of different proportion, copper, silver, graphite particle can sensitive adjustment cooling towers group。
Graphene solid cooling medium is except above-mentioned major advantage, Graphene solid cooling medium also has various advantages in use and management aspect, such as: production process is almost without consumption, processed workpiece non-oxidation decarburization, surface of the work cleaning bright, not aging, pollution-free, work situation is quite superior, be truly realized no consumption, without discharge production process。
Accompanying drawing explanation
Fig. 1 is this Graphene cooling characteristics figure；
Fig. 2 is 500 times of 40 millimeter of 45 steel core portion of the Ф metallurgical tissue picture after Graphene solid quenching medium quenches。
Fig. 3 is 500 times of 30 millimeter of 45 steel core portion of the Ф metallurgical tissue picture after tradition quenching medium quenching。
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described。
Embodiment 1: by weight, granularity is 0.01 micron 10 parts, and granularity is 0.1 micron 10 parts, and granularity is 10 micron 10, part, and granularity is 50 microns 10 parts, and granularity is 100 microns 50 parts (being all Graphene)；
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by fully dispersed in a liquid for Graphene solid micro-powder granule；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, by the Graphene solid micro-powder granule mix homogeneously after dehydration。
The Graphene solid quenching medium of above-mentioned preparation is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, is 13 times of copper, is more than 9260 times of water, is 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Compared with water and wet goods liquid cooling medium (in the identical situation of sample material used), when quenching-in water, when diameter is more than 20 millimeters, heart portion arises that non-martensite microstructure；When oil quenching, when diameter is more than 15 millimeters, heart portion arises that non-martensite microstructure。
Above-mentioned caption, the cooling performance of solid graphene quenching medium is better than the water (various water-based hardening liquid) of traditional liquid or the cooling performance of oil (mineral oil containing various additives) really。
Embodiment 2: by weight, granularity is the Graphene 10 parts of 0.1 micron, and granularity is the Graphene 10 parts of 0.5 micron, granularity is the Graphene 10 parts of 10 microns, granularity is the Graphene 10 parts of 50 microns, and granularity is the Graphene 50 parts of 100 microns, and granularity is the copper powder 10 parts of 100 microns。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper powder material。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, 13 times of copper, more than 9260 times of water, 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low high temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Compared with water and wet goods liquid cooling medium (in the identical situation of sample used), when quenching-in water, when diameter is more than 20 millimeters, heart portion arises that non-martensite microstructure, when oil quenching, when diameter is more than 15 millimeters, heart portion arises that non-martensite microstructure。
Fig. 2 is 500 times of 40 millimeter of 45 steel core portion of the Ф metallurgical tissue picture after Graphene solid quenching medium quenches。Visible it is entirely martensite, illustrates that austenite does not occur non-martensite to change in cooling procedure。
Fig. 3 is 500 times of 30 millimeter of 45 steel core portion of the Ф metallurgical tissue picture after tradition quenching medium quenching。Visible heart portion has occurred a large amount of pro-eutectoid ferrite, illustrates that austenite there occurs to non-martensite transformation in cooling procedure。This is not allowed in actual production。
Comparison diagram 2 and Fig. 3, quenching test proves, the cooling capacity of Graphene solid quenching medium is significantly greater than traditional liquid quenching medium (various water-based hardening liquid) or the cooling performance of oil (mineral oil containing various additives)。
Embodiment 3: by weight, granularity is the Graphene 10 parts of 1 micron, and granularity is the Graphene 10 parts of 10 microns, granularity is the Graphene 10 parts of 30 microns, granularity is the Graphene 10 parts of 40 microns, and granularity is the Graphene 50 parts of 50 microns, and granularity is 500 microns of aluminium powders 10 parts。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with aluminium powder material。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, 13 times of copper, more than 9260 times of water, 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 4: by weight, granularity is the Graphene 10 parts of 10 microns, and granularity is the Graphene 10 parts of 20 microns, granularity is the Graphene 10 parts of 30 microns, granularity is the Graphene 10 parts of 40 microns, granularity is the Graphene 50 parts of 50 microns, and granularity is 10 parts of the argentum powder of 1000 microns。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with argentum powder material。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, 13 times of copper, more than 9260 times of water, 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 5: by weight, granularity is the Graphene 10 parts of 10 microns, and granularity is the Graphene 10 parts of 20 microns, and granularity is the Graphene 10 parts of 30 microns, and granularity is the Graphene 10 parts of 50 microns, and granularity is 1000 Micron Copper Powder 60 parts。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper powder material。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, is 13 times of copper, is more than 9260 times of water, is 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 6: by weight, granularity is the Graphene 10 parts of 10 microns, and granularity is the Graphene 10 parts of 30 microns, and granularity is the Graphene 10 parts of 40 microns, and granularity is the Graphene 50 parts of 50 microns, and granularity is 100 Micron Copper Powder 20 parts。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper powder material。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, is 13 times of copper, is more than 9260 times of water, is 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 7: by weight, granularity is the Graphene 10 parts of 20 microns, and granularity is the Graphene 10 parts of 30 microns, and granularity is the Graphene 50 parts of 40 microns, and granularity is the copper powder 20 parts of 100 microns, and granularity is the aluminium powder 10 parts of 100 microns。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper powder and aluminium powder material respectively。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, is 13 times of copper, is more than 9260 times of water, is 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 8: by weight, granularity is the Graphene 90 parts of 100 microns, and granularity is the copper powder 10 parts of 100 microns。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper powder material。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, is 13 times of copper, is more than 9260 times of water, is 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 9: by weight, granularity is the Graphene 90 parts of 100 microns, and granularity is the aluminium powder 10 parts of 100 microns。
Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with aluminium powder material respectively。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, 13 times of copper, more than 9260 times of water, 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Embodiment 10: by weight, granularity is the Graphene 90 parts of 100 microns, and granularity is 10 parts of the argentum powder of 100 microns。Preparation method,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with argentum powder material respectively。
The Graphene solid quenching medium prepared by such scheme is applied in the quenching cooling of metal parts。
The capacity of heat transmission of Graphene is 12 times of silver, 13 times of copper, more than 9260 times of water, 38460 times of oil。
It is known that the cooling procedure of cooled material is actually the heat exchanging process of cooling medium and cooled material, namely the heat of cooled material gives cooling medium by heat exchange mechanism transmission。By physics it can be seen that the heat conductivity of cooling medium is more big, namely heat conductivity is more good, then cold more fast of cooled material, and we just say that the cooling capacity of cooling medium is more good。Nature at present it have been found that in all substances Graphene there is the strongest capacity of heat transmission, namely Graphene has maximum heat conductivity。
Therefore, it is best suited for as cooling medium。Owing to Graphene is solid-state fine grained state, when using as quenching medium, its cooling mechanism is thermal conduction mechanism, and at hot stage, owing to the temperature difference between cooled material and Graphene is very big, therefore, high temperature cooling rate is very big；At cold stage, owing to the temperature difference between cooled material and Graphene is only small, therefore, low temperature cooling rate is only small。As shown in Figure 1。
This feature height meets metal parts optimal cooling characteristics requirement when quenching cooling。Owing to having characteristics that, Graphene can meet all metal parts for cooling of quenching, the especially requirement of high precision metallic element mechanical performance and deformation accuracy。
Although above-mentioned, the specific embodiment of the present invention is described; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention。
Claims (7)
1. Graphene solid quenching medium, is characterized in that, following varigrained Graphene by weight be mixed to form: granularity is 0.01 micron 10 parts, granularity is 0.1 micron 10 parts, granularity is 10 microns 10 parts, and granularity is 50 microns 10 parts, and granularity is 100 microns 50 parts。
2. Graphene solid quenching medium, it is characterized in that, include by weight: granularity is Graphene 0-10 part of 0.1 micron, granularity is Graphene 0-10 part of 0.5 micron, granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 50 microns, and granularity is Graphene 0-50 part of 100 microns, and granularity is copper powder 10-60 part of 100-1000 micron。
3. Graphene solid quenching medium, it is characterized in that including by weight: granularity is Graphene 0-10 part of 1 micron, granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 30 microns, granularity is Graphene 0-10 part of 50 microns, granularity is Graphene 0-10 part of 100 microns, and granularity is the aluminium powder 10 parts of 500-1000 micron。
4. Graphene solid quenching medium, it is characterized in that, include by weight: granularity is Graphene 0-10 part of 10 microns, granularity is Graphene 0-10 part of 50 microns, granularity is Graphene 0-10 part of 100 microns, granularity is Graphene 0-10 part of 500 microns, and granularity is 10 parts of the argentum powder of 1000 microns。
5. Graphene solid quenching medium, is characterized in that, includes by weight: granularity is the Graphene 10 parts of 20 microns, granularity is the Graphene 10 parts of 50 microns, granularity is the Graphene 50 parts of 100 microns, and granularity is the copper powder 20 parts of 1000 microns, and granularity is the aluminium powder 10 parts of 100 microns。
6. the preparation method of Graphene solid quenching medium as claimed in claim 5, is characterized in that,
First, by the micro powder granule of Graphene processing to required granularity；
Secondly, according to ratio requirement, by Graphene solid micro-powder granule in water fully dispersed；
Then, the Graphene solid micro-powder granule after dispersion is made thinner dehydration in 2 hours in the baking oven being placed in 100 DEG C；
Finally, the Graphene solid micro-powder granule after dehydration is mixed homogeneously with copper and aluminium powder material。
7. such as the application of claim 1-5 any one Graphene solid quenching medium, it is characterized in that, described Graphene solid quenching medium is applied in the quenching cooling of metal parts。
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| CN104073224A (en) * | 2014-06-26 | 2014-10-01 | 宁波诺哈斯化工科技有限公司 | Monobasic or dibasic nanometer fluid heat transfer oil containing carbon nanotubes and/or graphene and preparation method of heat transfer oil |
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| CN103468101A (en) * | 2013-08-23 | 2013-12-25 | 苏州艾特斯环保材料有限公司 | Graphene heat dissipation coating |
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