The molding tool heat processing is the important craft process that promises molding tool function.It has the direct influence on the following function of molding tool.
The manufacturing accuracy of the molding tool:The organization changes asymmetry, ill success and heat processing formation of cripple remaining in response to dint lead greatly result in the molding tool is after the heat handles of process, assemble and molding tool use process in of transform, lower the accuracy of molding tool thus, even discard.
The strength of the molding tool:The hot processing craft draws up a not appropriate and hot processing operation norm not or hot processing the equipments appearance isn't intact and result in is handled molding tool strength(degree of hardness) could not reach a design to request.
The work life span of the molding tool:The organization structure that the hot processing results in not reasonable and crystal grain degree super mark etc., make the main function,such as the tenacity, cold hot tired function and anti- of molding tool, worn away function etc. to descend, influence the work life span of molding tool.
The manufacturing cost of molding tool:As the middle link or end work preface that the molding tool makes process, the hot processing results in of open crack and transform super bad and the function is super bad, will make the molding tool discarded under majority of circumstances, even if pass a repair still can continue to use, also will increase man-hour, the extension delivers goods a period and raises the manufacturing cost of molding tool.
Is exactly hot processing technique and molding tool quality to contain very close connection, make these two kinds of techniques are in the modern progress and promote mutually, common exaltation.Since 80's in 20th century, international molding tool heat processing technique's developing quicker realm is the surface that the vacuum heat handles a technique, molding tool to enhance a preparing of technique and molding tool material hardening technique.
The vacuum heat of molding tool handles a technique
Vacuum heat's handling a technique is a kind of new hot processing technique that the nearer year development gets up, it the characteristics had is exactly a molding tool manufacturing in the urgent demand of, for example keep heating from oxidizing and don't take off the carbon, vacuum takes off spirit or in addition to annoying, cancellation hydrogen frailty, raise the Su of material(spare parts) and tenacity and fatigue strength thus.The vacuum heats slow-moving, inside the spare parts outside difference in temperature smaller etc. factor, come to a decision the spare parts that the vacuum heat processing craft results in to transform small etc..
Press adoptive of the cooling lie quality different, the vacuum Cui fire can is divided into the vacuum oil cold Cui fire, vacuum to annoy cold Cui fire, vacuum water Wen Cui Huos, such as cold Cui fire and vacuum nitric salt...etc..In the molding tool vacuum hot processing main application of is the vacuum oil cold Cui fire, vacuum to annoy cold Cui fire and vacuum to return to fire.In order to keep the good characteristic of work piece(like molding tool) vacuum heating, choosing of coolant and cooling craft and draw up count for much, the molding tool Cui fire process mainly adopts oil cold compatibly cold.
No longer carry on the molding tool work that the machine processes noodles behind to the hot processing, the Cui fire adopts vacuum to return to fire possibly behind, especially vacuum Cui fire of work piece(molding tool), it can raise and the surface quality related machine function, like tired function, the surface shining degree, but causticity...etc..
The calculator of the hot processing process imitates the successful development and application of technique(include organization emulation and function to predict a technique) and makes the intelligence of molding tool turned a hot processing to make possible.Because of small batch quantity(even single piece), many characteristics of specieses that the molding tool produces, and request Gao to the hot processing function and disallow to appear the characteristics of discarding the article, and then make the intelligence of molding tool turned a hot processing to become have to.The intelligence of molding tool turns a hot processing to include:The structure of the explicit molding tool, request a molding tool to heat process temperature with the material, hot processing function field, in response to dint field distribute of the calculator imitate the molding tool cooling process temperature field, mutually change process and distribute in response to the dint field of calculator imitate the imitating of heating and cooling craft process true Cui fire craft of establishment heat processing equipments of automation control technique.Abroad the industry is flourishing nation, like the United States, Japanese etc., annoy Cui in the vacuum high pressure, have already developed the technique development of this aspect, mainly aim at a target is also a molding tool.
The surface of molding tool handles a technique
The molding tool is in the work in addition to requesting the radicle the reasonable match of strength and tenacity that the body has enough Gao, its surface function goes to a pass to work function and service life of molding tool importance.These surface functions point:Bear to wear away function and bear to decay function, coefficient of friction, tired function etc..The improvement of these functions, improvement and exaltation of pure dependence radicle body material are very limited, also uneconomical, and pass a surface processing technique, usually can receive the effect of half effort and double results, this is exactly also the surface processing technique to get the reason of quick development.
The surface of the molding tool handles a technique and changes a sex or compound processing technique through a surface Tu Fu, surface, change molding tool surface of appearance, chemistry composition, organization structure and in response to dint appearance with acquire the system engineering of needing the surface function.The way handled from the surface up, can is divided into again:Chemistry method, physical method, physical chemistry method and machine method.Although aim's being morely applied in the middle of raising a molding tool surface function new processing technique to continuously flow out now,make in the molding tool mainly is to ooze nitrogen and ooze carbon and hardening film deposition.
Ooze nitrogen craft has air to ooze the nitrogen, ion oozes nitrogen, liquid to ooze nitrogen etc. the method , in each method that ooze nitrogen, all how many grow to ooze nitrogen technique, can adapt to the request that the different steel grows a different work piece.In order to oozing the surface that nitrogen technique can form good function, and oozing, the Cui fire craft of nitrogen craft and molding tool steel contains good coordination and ooze nitrogen temperature in the meantime low, don't need vehemence cooling after oozing nitrogen, transforming of molding tool smallest, therefore the surface of molding tool enhances is an adoption to ooze nitrogen technique a little bit early, is also apply the most extensive.
The molding tool oozes a carbolic purpose, mainly for raising the whole and durable of molding tool, namely the work surface of molding tool has high strength and bears to whet sex, from here lead go into of technique way of thinking BE, use lower of material, then pass to ooze carbon Cui fire to replace the material of higher Class, lower a manufacturing cost thus.
Harden currently a film deposition technique Be more mature to is CVD and PVD.For the sake of the combining of increment film layer work piece surface strength, developed various CVDs and PVD now technique.Harden a film deposition technique at the earliest stage on the tool(the knife had, the blade had, the quantity had etc.) application, the effect was the best, various knifes having has already hardenned Tu Fu the film was a standard craft.The molding tool starts adopting Tu Fu to harden a film technique from 80's in last century.Hardenning the cost of film deposition technique(mainly equipments) is higher under the current technique condition, still at some nicety, longevity life molding tool up apply, if the adoption builds up the way of hot processing center, Tu Fu's hardenning the cost of film will consumedly lower, if more molding tools adopt this technique, can make level by the molding tool of the whole exaltation our country then.
The molding tool material prepares a hardening technique
The molding tool is in the process of making in carry on a kind of craft that the hot processing is a great majority molding tool to follow to use for a long time, starts from 70's in last century, international up put forward the viewpoint of preparing the hardening, but in order to processing tool machine just degree and sliced to pare the check and supervision that the knife have, preparing the degree of hardness of hardening could not attain the usage degree of hardness of molding tool, so prepare to harden a technical development to contain not great devotion.Along with process tool machine and slice to pare the exaltation that the knife has function, the preparing of molding tool material hardening technique development speed speeds, till 80's in last century, international the mold going to an industrial flourishing nation at the plastics is used on usage of material prepares the comparison of hardenning the mold piece to already arrive 30%.(currently in above 60%)Our country in the 90's in last century in after expect to start adopting to prepare to harden a mold piece.(mainly use a foreign import product)
The molding tool material prepares a hardening technique mainly at the molding tool material production factory development in the house and the implementation.The hot processing equipments that chemistry composition and equipment correspond that passes to adjust a steel, can large numbers of quantity produce a preparing of quality stability to harden a mold piece.The our country prepares a hardening technique in the molding tool material, start night, the scale is small, can not also satisfy the request that the local molding tool makes so far.
The adoption prepares to harden molding tool material, can simplify a molding tool manufacturing craft and shorten the manufacturing period of molding tool and raise the manufacturing accuracy of molding tool.Can foresee, along with the progress of processing technology, preparing to harden molding tool material will be used for more molding tool types.The molding tool heat processing is the important craft process that promises molding tool function.It has the direct influence on the following function of molding tool.
The manufacturing accuracy of the molding tool:The organization changes asymmetry, ill success and heat processing formation of cripple remaining in response to dint lead greatly result in the molding tool is after the heat handles of process, assemble and molding tool use process in of transform, lower the accuracy of molding tool thus, even discard.
The strength of the molding tool:The hot processing craft draws up a not appropriate and hot processing operation norm not or hot processing the equipments appearance isn't intact and result in is handled molding tool strength(degree of hardness) could not reach a design to request.
The work life span of the molding tool:The organization structure that the hot processing results in not reasonable and crystal grain degree super mark etc., make the main function,such as the tenacity, cold hot tired function and anti- of molding tool, worn away function etc. to descend, influence the work life span of molding tool.
The manufacturing cost of molding tool:As the middle link or end work preface that the molding tool makes process, the hot processing results in of open crack and transform super bad and the function is super bad, will make the molding tool discarded under majority of circumstances, even if pass a repair still can continue to use, also will increase man-hour, the extension delivers goods a period and raises the manufacturing cost of molding tool.
Is exactly hot processing technique and molding tool quality to contain very close connection, make these two kinds of techniques are in the modern progress and promote mutually, common exaltation.Since 80's in 20th century, international molding tool heat processing technique's developing quicker realm is the surface that the vacuum heat handles a technique, molding tool to enhance a preparing of technique and molding tool material hardening technique.
The manufacturing accuracy of the molding tool:The organization changes asymmetry, ill success and heat processing formation of cripple remaining in response to dint lead greatly result in the molding tool is after the heat handles of process, assemble and molding tool use process in of transform, lower the accuracy of molding tool thus, even discard.
The strength of the molding tool:The hot processing craft draws up a not appropriate and hot processing operation norm not or hot processing the equipments appearance isn't intact and result in is handled molding tool strength(degree of hardness) could not reach a design to request.
The work life span of the molding tool:The organization structure that the hot processing results in not reasonable and crystal grain degree super mark etc., make the main function,such as the tenacity, cold hot tired function and anti- of molding tool, worn away function etc. to descend, influence the work life span of molding tool.
The manufacturing cost of molding tool:As the middle link or end work preface that the molding tool makes process, the hot processing results in of open crack and transform super bad and the function is super bad, will make the molding tool discarded under majority of circumstances, even if pass a repair still can continue to use, also will increase man-hour, the extension delivers goods a period and raises the manufacturing cost of molding tool.
Is exactly hot processing technique and molding tool quality to contain very close connection, make these two kinds of techniques are in the modern progress and promote mutually, common exaltation.Since 80's in 20th century, international molding tool heat processing technique's developing quicker realm is the surface that the vacuum heat handles a technique, molding tool to enhance a preparing of technique and molding tool material hardening technique.
The vacuum heat of molding tool handles a technique
Vacuum heat's handling a technique is a kind of new hot processing technique that the nearer year development gets up, it the characteristics had is exactly a molding tool manufacturing in the urgent demand of, for example keep heating from oxidizing and don't take off the carbon, vacuum takes off spirit or in addition to annoying, cancellation hydrogen frailty, raise the Su of material(spare parts) and tenacity and fatigue strength thus.The vacuum heats slow-moving, inside the spare parts outside difference in temperature smaller etc. factor, come to a decision the spare parts that the vacuum heat processing craft results in to transform small etc..
Press adoptive of the cooling lie quality different, the vacuum Cui fire can is divided into the vacuum oil cold Cui fire, vacuum to annoy cold Cui fire, vacuum water Wen Cui Huos, such as cold Cui fire and vacuum nitric salt...etc..In the molding tool vacuum hot processing main application of is the vacuum oil cold Cui fire, vacuum to annoy cold Cui fire and vacuum to return to fire.In order to keep the good characteristic of work piece(like molding tool) vacuum heating, choosing of coolant and cooling craft and draw up count for much, the molding tool Cui fire process mainly adopts oil cold compatibly cold.
No longer carry on the molding tool work that the machine processes noodles behind to the hot processing, the Cui fire adopts vacuum to return to fire possibly behind, especially vacuum Cui fire of work piece(molding tool), it can raise and the surface quality related machine function, like tired function, the surface shining degree, but causticity...etc..
The calculator of the hot processing process imitates the successful development and application of technique(include organization emulation and function to predict a technique) and makes the intelligence of molding tool turned a hot processing to make possible.Because of small batch quantity(even single piece), many characteristics of specieses that the molding tool produces, and request Gao to the hot processing function and disallow to appear the characteristics of discarding the article, and then make the intelligence of molding tool turned a hot processing to become have to.The intelligence of molding tool turns a hot processing to include:The structure of the explicit molding tool, request a molding tool to heat process temperature with the material, hot processing function field, in response to dint field distribute of the calculator imitate the molding tool cooling process temperature field, mutually change process and distribute in response to the dint field of calculator imitate the imitating of heating and cooling craft process true Cui fire craft of establishment heat processing equipments of automation control technique.Abroad the industry is flourishing nation, like the United States, Japanese etc., annoy Cui in the vacuum high pressure, have already developed the technique development of this aspect, mainly aim at a target is also a molding tool.
The surface of molding tool handles a technique
The molding tool is in the work in addition to requesting the radicle the reasonable match of strength and tenacity that the body has enough Gao, its surface function goes to a pass to work function and service life of molding tool importance.These surface functions point:Bear to wear away function and bear to decay function, coefficient of friction, tired function etc..The improvement of these functions, improvement and exaltation of pure dependence radicle body material are very limited, also uneconomical, and pass a surface processing technique, usually can receive the effect of half effort and double results, this is exactly also the surface processing technique to get the reason of quick development.
The surface of the molding tool handles a technique and changes a sex or compound processing technique through a surface Tu Fu, surface, change molding tool surface of appearance, chemistry composition, organization structure and in response to dint appearance with acquire the system engineering of needing the surface function.The way handled from the surface up, can is divided into again:Chemistry method, physical method, physical chemistry method and machine method.Although aim's being morely applied in the middle of raising a molding tool surface function new processing technique to continuously flow out now,make in the molding tool mainly is to ooze nitrogen and ooze carbon and hardening film deposition.
Ooze nitrogen craft has air to ooze the nitrogen, ion oozes nitrogen, liquid to ooze nitrogen etc. the method , in each method that ooze nitrogen, all how many grow to ooze nitrogen technique, can adapt to the request that the different steel grows a different work piece.In order to oozing the surface that nitrogen technique can form good function, and oozing, the Cui fire craft of nitrogen craft and molding tool steel contains good coordination and ooze nitrogen temperature in the meantime low, don't need vehemence cooling after oozing nitrogen, transforming of molding tool smallest, therefore the surface of molding tool enhances is an adoption to ooze nitrogen technique a little bit early, is also apply the most extensive.
The molding tool oozes a carbolic purpose, mainly for raising the whole and durable of molding tool, namely the work surface of molding tool has high strength and bears to whet sex, from here lead go into of technique way of thinking BE, use lower of material, then pass to ooze carbon Cui fire to replace the material of higher Class, lower a manufacturing cost thus.
Harden currently a film deposition technique Be more mature to is CVD and PVD.For the sake of the combining of increment film layer work piece surface strength, developed various CVDs and PVD now technique.Harden a film deposition technique at the earliest stage on the tool(the knife had, the blade had, the quantity had etc.) application, the effect was the best, various knifes having has already hardenned Tu Fu the film was a standard craft.The molding tool starts adopting Tu Fu to harden a film technique from 80's in last century.Hardenning the cost of film deposition technique(mainly equipments) is higher under the current technique condition, still at some nicety, longevity life molding tool up apply, if the adoption builds up the way of hot processing center, Tu Fu's hardenning the cost of film will consumedly lower, if more molding tools adopt this technique, can make level by the molding tool of the whole exaltation our country then.
The molding tool material prepares a hardening technique
The molding tool is in the process of making in carry on a kind of craft that the hot processing is a great majority molding tool to follow to use for a long time, starts from 70's in last century, international up put forward the viewpoint of preparing the hardening, but in order to processing tool machine just degree and sliced to pare the check and supervision that the knife have, preparing the degree of hardness of hardening could not attain the usage degree of hardness of molding tool, so prepare to harden a technical development to contain not great devotion.Along with process tool machine and slice to pare the exaltation that the knife has function, the preparing of molding tool material hardening technique development speed speeds, till 80's in last century, international the mold going to an industrial flourishing nation at the plastics is used on usage of material prepares the comparison of hardenning the mold piece to already arrive 30%.(currently in above 60%)Our country in the 90's in last century in after expect to start adopting to prepare to harden a mold piece.(mainly use a foreign import product)
The molding tool material prepares a hardening technique mainly at the molding tool material production factory development in the house and the implementation.The hot processing equipments that chemistry composition and equipment correspond that passes to adjust a steel, can large numbers of quantity produce a preparing of quality stability to harden a mold piece.The our country prepares a hardening technique in the molding tool material, start night, the scale is small, can not also satisfy the request that the local molding tool makes so far.
The adoption prepares to harden molding tool material, can simplify a molding tool manufacturing craft and shorten the manufacturing period of molding tool and raise the manufacturing accuracy of molding tool.Can foresee, along with the progress of processing technology, preparing to harden molding tool material will be used for more molding tool types.The molding tool heat processing is the important craft process that promises molding tool function.It has the direct influence on the following function of molding tool.
The manufacturing accuracy of the molding tool:The organization changes asymmetry, ill success and heat processing formation of cripple remaining in response to dint lead greatly result in the molding tool is after the heat handles of process, assemble and molding tool use process in of transform, lower the accuracy of molding tool thus, even discard.
The strength of the molding tool:The hot processing craft draws up a not appropriate and hot processing operation norm not or hot processing the equipments appearance isn't intact and result in is handled molding tool strength(degree of hardness) could not reach a design to request.
The work life span of the molding tool:The organization structure that the hot processing results in not reasonable and crystal grain degree super mark etc., make the main function,such as the tenacity, cold hot tired function and anti- of molding tool, worn away function etc. to descend, influence the work life span of molding tool.
The manufacturing cost of molding tool:As the middle link or end work preface that the molding tool makes process, the hot processing results in of open crack and transform super bad and the function is super bad, will make the molding tool discarded under majority of circumstances, even if pass a repair still can continue to use, also will increase man-hour, the extension delivers goods a period and raises the manufacturing cost of molding tool.
Is exactly hot processing technique and molding tool quality to contain very close connection, make these two kinds of techniques are in the modern progress and promote mutually, common exaltation.Since 80's in 20th century, international molding tool heat processing technique's developing quicker realm is the surface that the vacuum heat handles a technique, molding tool to enhance a preparing of technique and molding tool material hardening technique.
