An idea raises an induction to quench considerably the dependability of craft
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Of inductor make and store inductor is inductive heat treatment heat tool. According to electromagnetism induction principle, the result that the geometrical feature of inductor falls in the case with electric particular parameter and heats is direct and relevant, accordingly, the design of inductor and making is the demand is very high. However the actual state of inductor is handiwork of heat treatment workshop is made mostly (see a picture 1) , and memory also is caboodle in the cabinet (see a picture 2) . The inductor appearance that this handiwork makes is irregular, hot form is abhorrent when be being used in the future, uniformity of temperature of thermal treatment zone is poor; Although be adjusted through relapsing, heat effect reluctance can be accepted, after be being used, tear open come down to pile together, hard to avoid does not collide to be out of shape even, affect the result that repeatability uses badly. If need to make the spare parts of this inductor, accomplish two impossibly so basically to agree. The consistency of such craft also have no way is mentioned. 2.
The join inductor of inductor is an induction heat apply feeling original, it joins commonly in quench the output of transformer is carried. To get used to the need of dimensional position, mix in inductor quench often want to one transfers between transformer guide plate. Current, of a lot of equipment quench transformer and inductor (or transfer guide plate) join is to rely on a few bolt, transfer guide plate does not have tigidity but character, if pursue 3, the graph is shown 4 times. Inductor of connective of this kind of form, cannot assure twice to install positional consistency or quench the inductor condition when heating. 3.
Cooling water and quench fluid pursues 3 in those who reveal is method of the commonnest cooling water join. This join means is inserted the meeting when receiving makes inductor is out of shape and affect positional precision. Mainer, because guide plate is cooling inadequate, calorific and serious, make in working process inductor produces deflection, create the difference of heat treatment result. Quench the join of fluid also is such, quench flukily fluid join and quench cooling mode makes quench cooling effect fluctuates, serious when cause craze. 4.
The dependability of the dependability of equipment and automation degree equipment and automation degree also are a factor that affects craft to carry out dependability. Rely on " person " the requirement that experience and responsibility heart satisfy stability of industrialized product quality very hard. And the automation that relies on machine equipment can accomplish treatment status to agree completely. But because equipment dependability and automation rate are average,concern with investment, and investment involves range big, not be decision of workshop application level commonly, accordingly, do not do here basically discuss. The characteristic of problem and difference induction heat treatment and machining pattern are same, chase a treatment; And other the craft characteristic that has heat treatment with furnace is many treatment that be the same as furnace. The quality control target that machines with furnace is one furnace (batch) , and inductive heat treatment can be accomplished undertake to every workpiece quality is controlled. Of course, if craft repeatability does not have reliable assurance, can cause an induction to quench of result of every spare parts abhorrent. The principle that the induction heats tells us, heating consistency depends on the consistency of the consistency that applies feeling inductor and inductor and workpiece coupling. Besides heat, the another that heat treatment craft operates is important the element is cooling, cooling condition (include temperature, pressure, flow, distributing and angle) consistency is likewise important. Comparative and current the operation current situation of inductive heat treatment and craft principle requirement, the issue that our collect gives to operate link in inductive heat treatment and difference are as follows. 1.
What the inductor inductor that make is designed and make is extremely professional strong, need a course to groom technically commonly. But a lot of heat treatment factories of our country undertake without special design personnel and ability complete inductor is designed, however according to " master " experience spot is made. By the graph 1 with the graph 2 can see, the optional sex that inductor makes is strong, make method and method basically without normative inductor. With material non-standard, dimension precision is low; Manual solder side is much, appearance is not neat. Electrode join surface is rough whole, exterior condition is poor. Inductor is main by inductor, 3 parts comprise converge platoon and working coil (see a picture 5) . Inductor the basis that is inductor, due and enough strength and strict dimension precision, such ability give the job coil with credible positional base; Converge platoon is given priority to with carrying electricity, use at adjusting coil and inductor again at the same time the distance between, accordingly, shedding area and refrigeration too is the core that its should assure; And electromagnetism force should bear when working coil is heating, because the intensity of this converge platoon also wants a consideration. The importance of working coil is self-evident, want to carry very big electricity when the job, its geometry appearance is deciding the form of thermal treatment zone, get more attention normally. Its cool is the main factor that affects life, because this should assure adequately refrigeration. Another when inductor makes serious problem, it is the consistency of spare parts. Because inductor has certain service life, accordingly, a classics is debugged and the substitute of the inductor with manufacturing eligible application must have same dimension precision, apparent handiwork is made achieve a requirement hard. 2.
The join of inductor needs different inductor as a result of different spare parts, must want to often change inductor and quench device gets used to manufacturing need. The join of inductor must assure to install positional reappearance, the dependability of electric interface, and cooling sufficient sex. Contrast graph 3 with the graph 4 can see, traditional forked mouth join guide plate joins through bolt is to cannot assure positional reappearance. In the electric interface of inductor, because exterior flatness is poor, although use bolt impaction,unwarrantable also effective interface is accumulated, increased osculatory resistance consequently, give out heat badly in use process and form oxidation skin, and oxidation skin conversely aggravate those who contact resistor increase, cause bigger power caustic estrangement to give out heat. Transfer guide plate is join quenchs the commonly used device of transformer and inductor. Its action is to adjust the position that increases hot coil to be carried at quenching transformer is outputted relatively on one hand, provide assembly ground to inductor at the same time. By before narrate knowable, want to assure the positional reappearance of inductor, transfer first guide plate needs to have enough tigidity; In its second joint face must have fixed position measure, such ability assure for many times to tear open outfit inductor position to agree; Because transfer,on the other hand guide plate also is to hold conductance put oneself in another's position, have in working process accordingly those who showing is calorific, use water-cooling commonly. Water-cooling inadequate or the two plate water-cooling of guide plate is inhomogenous, calorific cause be out of shape differ and happen bend. The position of such inductor also can change likewise, lose fiducial. 3.
Cooling water and quench the cooling condition of fluid since cooling water and quench no matter be positional precision,fluid works to inductor, still be life, and quench the result is very important, need to be monitored to its and be protected so. And at present most old old machine tool does not have cooling water monitor and warning function, or some uses a simple pressure table to indicate. When pipeline jams pressure watch still is indicated in high-pressured power position, but cannot explain cooling water is sufficient. Current, discharge is used to monitor to refrigeration on the inductive heating installation of the entrance monitor with temperature, can make sure cooling or quenched position is consistent adequately so. Means of settlement -- spouse of inductor of use inductor spouse draws lessons from Europe's advanced concept, it is the fundamental part that solves inductor to make standardization and consistency for the user only. It is mature the craft characteristic of inductive heat treatment, from structural intensity, water and electricity join, condition is monitored and the respect such as protection undertook be optimizinged adequately designing, make worker of inductive heat treatment dedicated be mixed at the design of working coil debug, join of unifinication of other consistency, dependability, water and electricity is assured by inductor spouse. Inductor spouse includes inductor shoe, change straightening die of guide plate, inductor and inductor quickly to make standard material 4 kinds. 1.
Inductor boots inductor boots (see a picture 6) the design joins quickly for unifinication of water and electricity mode, plate uses the profile of electrician pure copper of special rolling, CNC Machining center is machined, dimension precision is tall, solder side is little, inductance is small. The insulation between plate and close solid are used get together 4 fluorine ethylene, insulation property is good, heat-resisting temperature is high. The length that take-over is OK the basis needs cut weak point; Installing hole of the obligate on guide plate, can use at securing other accessories. By the graph 6 can see, coil should work on user solder only (inductor head) can debug heated. Use convenient, interchangeability is good. Because the base of inductor boots has very tall dimension precision, because this also assured the requirement of installation fixed position of inductor. Such users are OK and dedicated design and be improved of coil part at heating and need not be between beautiful take time on the preparation of those fundamental components. 2.
Exchange card quickly in quench the output end of transformer often wants to accept guide plate of a join. The give attention to two or morethings of join guide plate in inductor spouse the fast join function of water and electricity, more important is, it offerred the rigid and exact location of inductor, exchange card quickly namely (see a picture 7) . Exchange card quickly use wedge type construction, wedge blocks the base nicety of mouth and inductor boots to cooperate; The O form ring that the cooling water of guide plate carries an interface is sealed flow into inductor job coil, return guide plate next; Assemble and unassemble need to open only when inductor exchange card quickly press brassily piece, can change inductor, and water and electricity is finished. Because exchange card quickly tigidity of join guide plate is good, refrigeration is inside passageway, reason made sure the inductor in working process carries the positional precision of the ministry, square cooling water should receive side only, do not change along with inductor and disassemble. If need, in cooling water interface place still can set temperature or discharge is monitored, such more reliable. 3.
Inductor is corrective once inductor investment is used,protect a model, the effect of electromagnetism force suffers in working process, long hind meeting generation is out of shape certainly; Changing even action of undeserved outside force happens probably in the memory that come down and mobile process be out of shape. So, the inductor when how assuring to be used next time is in good condition? Draw lessons from cutting tool deposit a concept we advocate use inductor corrective protection model. If the graph is shown 8 times, this protection mould has enough tigidity and positional precision, when the inductor of debus puts modular pitch, be out of shape can get correction; Be deposited together with modular antrum or transfer, criterion inductor won't happen to be out of shape or damage, ensure the in good condition sex that throws the inductor when using next time. 4.
Because inductive heat treatment is a very professional domain,inductor makes standard material, technologist of inductor heat treatment is little, know inadequacy to the standardization of inductor, accordingly, inductor makes specialization rate is very low. And big much user can use the general copperplate on the market only when he makes inductor by hand (canal) etc, and the requirement that these material often cannot satisfy inductor to make. For instance rectangular copper pipe, round part is too large the influence heats of the layer distributing. Additional, inductor is departmental the function of cent differs to ask to also differ to cupreous quality. Now, the series profile that be made technically for inductor and produces can be in commodity of inductor spouse series choose. Additional, it is OK to suit the insulating part that inductor uses, fastener, clean material to wait for to also be at present in inductor spouse series choose, rose to abstain the geometrical precision of inductor greatly, increased the stability that craft carries out. 5.
A new product should realize the gain of the user credible response quenchs, need very the measure of loaded down with trivial details, the design that costs a large number of time and energy to undertake inductor is made and craft is developed. It is to quench above all the design of inductor (basically be working coil) the technical reserve that needs to combine equipment ability and architect is revised repeatedly, throw complex production process next; Make after coming out heat even actually debug, relapse the geometrical size that ability of section test and verify determines inductor finally and a complete craft, and this craft needs a series of assurance that step will come true. Inductor spouse realizes craft reappearance namely assure a method. Otherwise, no matter be the recycle that inductor changes or is inductor,make, all craft developed a process to be lost, same job must come again, also or be by experience, return " experienced worker is only able give good product " old road goes up. And use inductor spouse to be able to make craft gets assuring, without the care with fluctuant quality, although " experienced worker " absent, able also the product that gives same quality, improved manufacturing efficiency considerably, reduced manufacturing cost. Since epilogue is long-term, industry of heat treatment of our country induction relies on experience generally to make sure the practice of quality cannot have satisfied current requirement far. And this among them main reason did not find what technology reliability assures to be able to implement measure namely. Of inductor spouse roll out, found a method for us, can will " experienced worker " wisdom tarry, improve the dependability of craft and product quality thereby, realized the standardization of relevant tool and seriation, improved efficiency greatly, reduced cost. Unit: Beijing gold and inductor alliance author: Zhao Xiuhua, yan Mangang CNC Milling