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What is the stress of injection mold and do so than
by：CSSSLD
2021-01-23
In most of the mold from personnel of course of practice, always feel the knowledge of the plastic used is relatively small, but in the new product review, listen to leadership 'stress' than 'do so' flow 'to' the noun such as 'viscosity', always feel good advanced knowledge, like a profound thing.
mould practitioners to secretly on baidu, everywhere, find information and data always see people more dizzy, there are few data to write to construct. Today let science South Asia teda small make up to you about these nouns of common!
1. Stress
in the life, we will see such a phenomenon, after the rubber pressure down, let go, it will slowly return to the initial state, in fact after a punch in the wooden table, wooden table force point will sag, and when the power to withdraw, as long as no more than its limit, it will also return to original state. Just it is too weak, so that we can't feel.
this have what relation with stress? When stress is actually an object by outside forces, the interior of the object will follow the external force to fight, to resist the external force, and tried to return to original state. This resistance within the object, is what they call the stress.
stress this goods, have a purpose? We often hear the words 'stress concentration', regardless of the plastic products or steel, the words will appear, what is the meaning of this? If the arrow direction, applying force to the product, when the force is big enough, will produce what results? Circle the right position will break.
the circle Angle position will break. Why?
it is just because of the stress concentration in the right position, more than its limits, from the stress concentration will craze, so, let's general and how to solve?
rounded corners, is the most effective way to solve the stress concentration, not to say that fall on the round corner is fine, the rounded mainly spread its position, make it, thus, is not so easy to break.
especially for mould, the production process is the most easy to crack in the right-angle position of the steel, including heat treatment process of cracking is also in these positions.
2, do so than
do so than the distance is the plastic flow and the ratio of product thickness, feel the official? It is a little bit more simple said, plastic flow from a crack in the past, the seam, the greater the flow can be further, the crack is the thickness of the product. The distance it flow divided by the seam, the size of the is to do so.
of course, this value with temperature, die temperature, degree of polishing has relationship, is just a range value, probably is different, different conditions is difficult to accurately.
do so than do?
if you have such doubt, looking at a product, use what gate, you can judge a thing or two, probably as to use several gate? You might guess, I feel it.
feeling has always been, it is not too accurate, sometimes a gate can be done, not you worry about one thousand? Then chose two, or to do a counterplan. So, judging standard in where? Do so can roughly judge this stuff than they actually are.
for example:
PC material, product thickness 2 mm, products fill the distance is 200, do so than is 200/2 = 100. This value is the basic in the PC the limits of the theoretical value, it is not add port. If you count the port? So, this product, we choose a sprue injection molding difficulty will be very big.
why product gate location to choose from the thick place into the glue? Because of the thicker the place to do so even more.
the above is the stress of injection mold with the specific understanding that do so than more smooth da plastic products factory die content please note changshu website!
mould practitioners to secretly on baidu, everywhere, find information and data always see people more dizzy, there are few data to write to construct. Today let science South Asia teda small make up to you about these nouns of common!
1. Stress
in the life, we will see such a phenomenon, after the rubber pressure down, let go, it will slowly return to the initial state, in fact after a punch in the wooden table, wooden table force point will sag, and when the power to withdraw, as long as no more than its limit, it will also return to original state. Just it is too weak, so that we can't feel.
this have what relation with stress? When stress is actually an object by outside forces, the interior of the object will follow the external force to fight, to resist the external force, and tried to return to original state. This resistance within the object, is what they call the stress.
stress this goods, have a purpose? We often hear the words 'stress concentration', regardless of the plastic products or steel, the words will appear, what is the meaning of this? If the arrow direction, applying force to the product, when the force is big enough, will produce what results? Circle the right position will break.
the circle Angle position will break. Why?
it is just because of the stress concentration in the right position, more than its limits, from the stress concentration will craze, so, let's general and how to solve?
rounded corners, is the most effective way to solve the stress concentration, not to say that fall on the round corner is fine, the rounded mainly spread its position, make it, thus, is not so easy to break.
especially for mould, the production process is the most easy to crack in the right-angle position of the steel, including heat treatment process of cracking is also in these positions.
2, do so than
do so than the distance is the plastic flow and the ratio of product thickness, feel the official? It is a little bit more simple said, plastic flow from a crack in the past, the seam, the greater the flow can be further, the crack is the thickness of the product. The distance it flow divided by the seam, the size of the is to do so.
of course, this value with temperature, die temperature, degree of polishing has relationship, is just a range value, probably is different, different conditions is difficult to accurately.
do so than do?
if you have such doubt, looking at a product, use what gate, you can judge a thing or two, probably as to use several gate? You might guess, I feel it.
feeling has always been, it is not too accurate, sometimes a gate can be done, not you worry about one thousand? Then chose two, or to do a counterplan. So, judging standard in where? Do so can roughly judge this stuff than they actually are.
for example:
PC material, product thickness 2 mm, products fill the distance is 200, do so than is 200/2 = 100. This value is the basic in the PC the limits of the theoretical value, it is not add port. If you count the port? So, this product, we choose a sprue injection molding difficulty will be very big.
why product gate location to choose from the thick place into the glue? Because of the thicker the place to do so even more.
the above is the stress of injection mold with the specific understanding that do so than more smooth da plastic products factory die content please note changshu website!
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