Become the master that mould material chooses

Group, the maker of the mould and architect are the expert of data side. Explanation of John Berg of market department manager says: "We belong to commercial secret in the choice of wearability and thermal conductance respect. We are special the geometrical appearance that notices to evaluate a spare parts, make with reaching first-rate as far as possible. The choice that we expect to pass data will affect manufacturing cycle, cooling cycle and spare parts stability. The choice effect of mould material and the choice effect that cooling current are likewise breathtaking. " carry ceaseless research, you can know when to ought to choose new mould material, and a mould engineer that how finding correct material David Hirt is Ventra Plastics company. He understands a car very much the actor weakness that place of exterior floodlight product uses all sorts of data (stainless steel of P20 lens grade, 15-5 PH and H-13) , these actor defect decided all sorts of material ought to be in when and where is used. "Lowest of cost of material of P20 class lens, but in class A when soldering, need to undertake match colors apparently, and be the softest kind among 3 kinds of material, rust very easily. 15-5 PH stainless steel solders it is quite easy to rise, do not need match colors, won't rusty, polishing effect is best, but cost is high, heat up conductivity lowest. H-13 is in cost respect relatively moderate, exterior hardness is highest, conduce to prevent cut, and best heat is had to conduct function in these 3 kinds of material, but also be the processes the hardest data in 3 kinds of material, in class A apparently when soldering must match colors. " Hirt undertook an analysis to these 3 kinds of material. Say according to operation director Andy Baker, p-20, 420SS and S7 are the Byrne Tool company that he is in most often choose model speech material. As Byrne company grow and the requirement that the client fulfils treatment mission quickly, they had begun to try other data, be like beforehand sclerotic 420 stainless steel; They also are searching updated equipment select material to expect, like a kind of TOOLOX 44 that be called (beforehand sclerosis comes of 44RC hardness) rolled steel. "We are seeking the means that can save time and cost all the time, use beforehand hard steel can achieve this one requirement. But at present we can have not completed such transition, the reason is we encountered difficulty when trial-produce new product, its are we need to change likely as a result new material. " Baker emphasizes saying. And be in company of General Electric Appliances And Lighting, explanation of mould engineer Tom Lynn says, come for years he uses hard steel of temper by dipping in water to create all patterns all the time, most circumstance is a basis plastic material chooses a S7/H13 steel or stainless steel. "We a lot of production tasks should last 3~5 year, after undertaking tracking to the mould is made and maintaining cost, we decide to convert the P20 steel of tall hardness. " introduce according to Lynn, the reason that these moulds ask to use stainless steel depends on plastic raw material (great majority is RPVC) already switch arrives beforehand material of sclerotic stainless steel, this kind of changeover saved the production cost of the mould significantly. "Completely sclerotic mould needs to undertake the machine treatment with greater difficulty, heat treatment and surface are machined. Sclerotic rolled steel is time-consuming when machine treatment longer, heat treatment also needs many time and additional cost. And use beforehand the pattern that sclerotic rolled steel creates is OK faster production is finished, from make cost is reduced. To most spare parts, the price that rolled steel of tall hardness P20 compares S7 or H13 slightly low. " Lynn says so. This company's newest act is steel of P20 of will tall hardness change for standard P20 steel, can save more cost so. "The hardness difference of steel of tall hardness P20 and P20 steel is not big, and standard P20 steel is bought more easily than steel of tall hardness P20. " Lynn emphasizes saying. Company of GE Appliances And Lighting of supplier of large car OEM, after the course studies and be examined, the decision changes P20 steel the aluminous material of the grade that it is QC. This kind of change depends on the year of production spare parts of a specific mould expects use amount. Lynn explanation says: "Aluminous material may not be the optimal choice of all circumstances, but when aluminous material is applicable, can come true tremendous managing. This kind managing not remarkable on cost, its reflect the freedom of the manufacturing cycle of in mould, efficiency and design to spend on. In the first batch of patterns that we produce with aluminous material, after some production that passed above 100 thousand times are periodic, still use first-rately. We hope these moulds can be used the 5 years longest, produce 7~8 every year 10 thousand spare partses. " the importance that these simple example card understand above to undertake study more, such you can understand when ought to consider new mould material option, and how to find the properest material for the client. CNC Milling