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Injection mold damage reason and the classification of steel
by：CSSSLD
2021-01-23
Injection mold processing in today's application is very broad, recent suye received many peer friends some questions for help, reflect the most is the time when the injection mold machining, mold damage condition is the most headache manufacturers, share with you what is the cause of the problem.
injection mold processing mould if is that, for a long time not to be precise, maintenance is easy to damage, this undoubtedly for injection mold processing plant is a big burden, because the cost of the injection mold processing are very expensive.
the failure reasons of the injection mold processing mould processing, we think it is because of injection mould in the assembly, how big will not be imposed from outside force, but once installed in the injection molding machine, injection mold processing, will bear all kinds of external force, causing damage in injection mold, the injection mold processing must have strength enough to withstand a variety of external force.
finally completely fill the cavity inside, also must want to have a lot of material strength to make it into. Although said that the pressure usually lasts less than 1 second, but still to injection mould processing core and cavity to produce a certain impact.
the color of the plastic injection products for the overall sense of the product has the vital role, engaged in the injection molding processing friend we all know, uneven injection mold injection molding processing products color is a problem, let us very headache, here we say what is the cause of uneven colors injection tooling.
1, colorants spread bad, this kind of situation often appears near the gate pattern. 。
2, plastic or coloring poor thermal stability, stability is tonal parts, must strictly fixed production conditions, especially temperature, feed rate and the production cycle. 。
3, of crystalline plastics, try to make the cooling speed of stamping parts, parts for wall thickness difference is big, can be masking off color with colorants, for wall thickness is uniform to fixed parts and mold temperature. 。
4, the shape of the parts and the gate form, the position of plastic filling, make parts of some local produce off color, when it is necessary to modify. 。
different types of injection mold, the requirement of design drawings and mold steel is also different, the use of different make injection mold die steel performance is also different, the following is a manufacturer of injection mold of several major categories and characteristics of steel.
1. Class 101 steel mold, the use of production or 1 million times, long service life of precision injection mold, characteristics are respectively: ( 1) Materials to be minimum hardness of 280 BHN, mould frame, 2) Within the cavity of the mold insert steel hardened to 48 ~ 50 HRC hardness, and the slider, chocking block, briquetting hardened to injection molding processing, such as ( 3) Sliding block should have wear-resisting block, push rod plate should have guide post, ( 4) Cooling waterway suggest 420 stainless steel insert, avoid rust and clean up.
2. 102 class steel mold, the service life of 500000 ~ 1 million mold, mass production injection mold, the features are: ( 1) Materials to be minimum hardness of 280 BHN, mould frame, 2) Within the cavity of the mold insert to hardened steel hardness to 48 ~ 52 HRC, other parts are processed, 3) Quantity according to the production requirements to choose whether to install: slider block, push rod plate guide pillar, wear-resisting coolant passages and electroplating plating cavity.
3. 103 class module, using production number 10 ~ 500000 mould, medium batch injection mold, characterized by: ( 1) Material is minimum hardness of 165 BHN, mould frame, 2) Lining inserts for P20 steel or higher hardness of the steel.
4. 104 class module, the service life of the production is 500 ~ 100000 mould, injection mold, small batch production is characterized by: ( 1) Die set P20 material, also can use mild steel or aluminum, ( 3) Endometrium insert available aluminum, mild steel and other metals.
5. Life is less than 500 times, 105 class module, production can be used for single production and experimental mode, features are: using aluminum alloy, epoxy resin or other materials, but asked to reach a certain strength.
injection mold processing mould if is that, for a long time not to be precise, maintenance is easy to damage, this undoubtedly for injection mold processing plant is a big burden, because the cost of the injection mold processing are very expensive.
the failure reasons of the injection mold processing mould processing, we think it is because of injection mould in the assembly, how big will not be imposed from outside force, but once installed in the injection molding machine, injection mold processing, will bear all kinds of external force, causing damage in injection mold, the injection mold processing must have strength enough to withstand a variety of external force.
finally completely fill the cavity inside, also must want to have a lot of material strength to make it into. Although said that the pressure usually lasts less than 1 second, but still to injection mould processing core and cavity to produce a certain impact.
the color of the plastic injection products for the overall sense of the product has the vital role, engaged in the injection molding processing friend we all know, uneven injection mold injection molding processing products color is a problem, let us very headache, here we say what is the cause of uneven colors injection tooling.
1, colorants spread bad, this kind of situation often appears near the gate pattern. 。
2, plastic or coloring poor thermal stability, stability is tonal parts, must strictly fixed production conditions, especially temperature, feed rate and the production cycle. 。
3, of crystalline plastics, try to make the cooling speed of stamping parts, parts for wall thickness difference is big, can be masking off color with colorants, for wall thickness is uniform to fixed parts and mold temperature. 。
4, the shape of the parts and the gate form, the position of plastic filling, make parts of some local produce off color, when it is necessary to modify. 。
different types of injection mold, the requirement of design drawings and mold steel is also different, the use of different make injection mold die steel performance is also different, the following is a manufacturer of injection mold of several major categories and characteristics of steel.
1. Class 101 steel mold, the use of production or 1 million times, long service life of precision injection mold, characteristics are respectively: ( 1) Materials to be minimum hardness of 280 BHN, mould frame, 2) Within the cavity of the mold insert steel hardened to 48 ~ 50 HRC hardness, and the slider, chocking block, briquetting hardened to injection molding processing, such as ( 3) Sliding block should have wear-resisting block, push rod plate should have guide post, ( 4) Cooling waterway suggest 420 stainless steel insert, avoid rust and clean up.
2. 102 class steel mold, the service life of 500000 ~ 1 million mold, mass production injection mold, the features are: ( 1) Materials to be minimum hardness of 280 BHN, mould frame, 2) Within the cavity of the mold insert to hardened steel hardness to 48 ~ 52 HRC, other parts are processed, 3) Quantity according to the production requirements to choose whether to install: slider block, push rod plate guide pillar, wear-resisting coolant passages and electroplating plating cavity.
3. 103 class module, using production number 10 ~ 500000 mould, medium batch injection mold, characterized by: ( 1) Material is minimum hardness of 165 BHN, mould frame, 2) Lining inserts for P20 steel or higher hardness of the steel.
4. 104 class module, the service life of the production is 500 ~ 100000 mould, injection mold, small batch production is characterized by: ( 1) Die set P20 material, also can use mild steel or aluminum, ( 3) Endometrium insert available aluminum, mild steel and other metals.
5. Life is less than 500 times, 105 class module, production can be used for single production and experimental mode, features are: using aluminum alloy, epoxy resin or other materials, but asked to reach a certain strength.
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