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  Cracking of Table Mould Is A Common Defect in Plastic Products

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  Table Mould(FURNITUREMOULD) https://www.furnituremould.com/product/chair-table-stool-mould/ cracking is a common defect in plastic products, and the main reason is due to stress deformation. There are mainly residual stress, external stress and stress deformation caused by external environment. What should I do after cracking? 1. Cracks caused by residual stress 　　 The residual stress is mainly caused by the following three conditions, i.e. excess filling, ejection from mould and metal inlay. As a crack generated under the condition of excess filling, the prevention and control methods can be mainly started from the following aspects: (1) Since the pressure loss of the sprue is the smallest, if cracks are mainly generated near the sprue, the multi-point distribution of point gates, side gates and shank gates can be considered instead. (2) On the premise of ensuring that the resin does not decompose or deteriorate, appropriately increasing the resin temperature can reduce the melt viscosity and improve the fluidity, and at the same time can reduce the injection pressure to reduce the stress. (3) In general, stress is easy to occur when the mould temperature is low, and the temperature should be appropriately increased. However, when the injection speed is higher, even if the mould temperature is lower, the generation of stress can be reduced. 2. Cracking Caused by External Stress The external stress here is mainly caused by stress concentration due to unreasonable design, especially at sharp corners. 3. Cracking Caused by External Environment Chemicals, water degradation caused by moisture absorption, and excessive use of recycled materials will degrade physical properties and produce cracks. 4. How to deal with the cracked table mould (1) Annealing treatment. After the parts are moulded, they are heated for a period of time. The heating equipment can be a hot air blower, a stoneware furnace or constant temperature water. The annealing temperature can be the drying temperature of the raw materials, and the annealing time depends on the cracking degree. (2) Soaking in normal temperature tap water. After the moulded parts are taken out of the mould, they are put into a water pan for soaking and cooling, and the bigger the cracking degree is, the longer the soaking time is, and the longest time is more than 24 hours. The length of soaking time depends on the cracking degree of the parts. This is the most practical prevention method often used in most factories, but this method also has certain limitations, such as easy to damage products, so be careful when handling, or the products need to be sufficiently dried for post-treatment, such as pad printing, spraying, electroplating, etc. If you are interested in our products, you can click Air Cooler Mould https://www.furnituremould.com/ to learn more information.
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  What Is The Purpose of the Chair Mould Test

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  It is necessary to test the Chair Mould(FURNITUREMOULD) https://www.furnituremould.com/product/chair-table-stool-mould/ manufacturing, and the operator usually needs to evaluate the specific situation of the chair mould to avoid unnecessary cost and time increase in the process of modifying the chair mould. The evaluation also includes the setting of machine process parameters. In order to make up for the shortcomings in the chair mould design, the operator may make incorrect settings without knowing it. The production and operation process of the equipment is abnormal, because the parameter setting range required to produce qualified products is very small. Any slight deviation in parameter setting may lead to the quality of the final product far exceeding the allowable error range, and the actual production cost thus generated is often much higher than the cost incurred by optimizing the chair mould in advance. Defects in moulded products are caused during plasticization and injection moulding, but sometimes they are also related to improper design of chair mould. Possible influencing factors include: number of mould cavities. The design of the cold/hot runner system, the type, location and size of the entrance, and the structure of the product itself. In order to avoid product defects caused by chair mould design, we need to analyze the chair mould design and mould process parameters when making the chair mould. The purpose of mould testing is to find out the optimized process parameters and chair mould design. Even if the factors such as materials, machine settings or environment have changed, the batch production environment can still be stable and uninterrupted, not only to obtain a good sample. This is very important. The basic steps of mould testing: set the temperature of the material barrel. The initial barrel temperature setting must be based on the recommendation of the material supplier. Different manufacturers and different brands of the same material may have considerable differences, and material suppliers often have quite in-depth research and understanding of their own materials. Users can make basic settings according to their recommendations, and then make appropriate fine adjustments according to specific production conditions. If you are interested in our products, you can click Furniture Mould https://www.furnituremould.com/ to learn more information.
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  Processing and Manufacturing Cycle of Household Product Mould

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  Earlier in the development of the Household Product Mould(FURNITUREMOULD) https://www.furnituremould.com/product/daily-necessities-mould/ , mould production time was an aspect that we were very concerned about. Whether it is electronic products, medical products or environmental protection devices, they are updated every day. It may not be accurate enough to say that time is money. Time is more like the life of an enterprise. I think this is what most entrepreneurs agree with. As for how long it will take for household product mould to be processed, this question cannot be generalized. It should be considered from various factors, such as product structure and difficulty in processing plastic mould parts, customer product requirements, product data characteristics and the minimum quantity of mould products, i.e. the number of mould cavities. The annoying processing and manufacturing cycle of household product mould is subject to close scientific accounting, and it is impossible to report a number to customers at will. This mainly depends on the disorder degree of product planning structure, scale, precision, quantity demand, product function, etc. 1. Product Requirements: Different customers definitely have different requirements for products. The planned appearance surface is a sub-surface or smooth surface or mirror surface, which affects the production cycle of household product mould. 2. Product Scale: Yes, the larger the scale, the longer the processing cycle for household product mould will be corresponding. In contrast, the processing time of spare parts will be longer. 3. Product structure: refers to the structural difficulty of the plastic sample provided by the customer. Generally, it can be understood that the more disordered the plastic shape, the more difficult it is to make the mould. Technically speaking, the more plastic parts have parting surfaces, the more assembly positions, fastening positions, hole positions, and rib positions, the greater the processing difficulty will be corresponding. For both, the mould manufacturing time will be correspondingly prolonged. Generally speaking, the more disordered the mould structure is, the lower its quality will be, the more difficult it will be to process, the more problem points will be, and the slower it will be to achieve the final product function. 4. A number of cavities of the mould: that is, a set of mould has several cavities, and a set of mould produces several products, depending on whether the customer's product market is large or not, making two products are definitely different from one product, and the processing time will also be different. Normally, as the new product has not yet been fully opened in the store, the store's demand for the product is not so great. At this time, the number of cavities in the injection mould does not need to be so large, and the supply of the new product in the store can be ensured. The cost-performance ratio is relatively the highest. Of course, the number of cavities in the mould must be added when the product market is mature. It depends on the market demand to determine whether to change the number of cavities to feed back the market demand. 5. Product information function: Our products often have special requirements, and the requirements for mould steel and processing technology are also different. The requirements for moulds are different. The mould needs to be hardened. After hardening, the secondary CNC of the precision grinding machine will make the subsequent processing more difficult and will naturally take more time. There are also some moulds that require anti-corrosion or soft rubber moulds. The requirements will be different and the processing technology will be messier. If you are interested in our products, you can click Crate Mould https://www.furnituremould.com/ to learn more information.
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  The Wear Resistance of The Crate Mould Will Affects Its Hardness

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  With the development of industry, industrial production and people's life cannot be separated from the use of moulds. As an important part of moulds, mould accessories are closely related to moulds. The wear resistance of Crate Mould(FURNITUREMOULD) https://www.furnituremould.com/ affects the hardness of die parts. In general, the higher the hardness of crate mould, the smaller the wear amount, and the better the wear resistance. Let's talk about it in detail. 1. Strong patience Most of the working conditions of crate mould are very harsh, some of which often bear large impact load and then lead to brittle cracking. In order to avoid sudden brittle fracture of mould parts during operation, the crate mould must have higher strength and patience. The tolerance of crate mould depends primarily on the carbon content, grain size and arrangement status of the data. 2. Wear resistance When the blank plastically deforms in the mould cavity, it moves and slides along the outer surface of the mould cavity, causing severe friction between the outer surface of the mould cavity and the blank, and then causing the mould to fail due to wear. Therefore, the wear resistance of the data is one of the most basic and important functions of the mould. 3. Fatigue and cracking function In the process of operation, the long-term effect of cyclic stress often leads to fatigue and cracking of crate mould. It takes the form of repeated impact fatigue cracking, tensile fatigue cracking, contact fatigue cracking and zigzag fatigue cracking with small energy. If you are interested in our products, you can click Household Product Mould https://www.furnituremould.com/product/daily-necessities-mould/ to learn more information.
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  The Surface Abrasion Resistance of The Chair Mould Is Improved

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  (1) First of all, the design of the parts shall be reasonable, and the best structural scheme shall be selected as far as possible. The designers of the parts shall consider the technical requirements of the parts and their structures must conform to the manufacturability and feasibility of the plastic Chair Mould(FURNITUREMOULD) https://www.furnituremould.com/product/chair-table-stool-mould/ manufacturing. (2) The design of chair mould is the most important step to improve the quality of plastic chair mould. Many factors need to be considered, including the selection of plastic chair mould materials, the usability and safety of plastic chair mould structure, the machinability of plastic chair mould parts and the convenience of plastic chair mould maintenance. These should be considered as comprehensively as possible at the beginning of the design. (3) The manufacturing process of the plastic chair mould is also an important part to ensure the quality of the plastic chair mould. The processing method and processing precision in the manufacturing process of the plastic chair mould will also affect the service life of the mould. The precision of each part directly affects the overall assembly of the plastic chair mould. Apart from the influence of the equipment's own precision, the processing precision of the plastic chair mould parts should be improved by improving the processing method of the parts and improving the fitter's technical level in the grinding process of the plastic chair mould. If the overall assembly effect of the mould cannot meet the requirements, the probability of the plastic chair mould acting under abnormal conditions will be increased during the mould test, which will have a great impact on the overall quality of the mould. (4) Surface strengthening is carried out on the main forming parts of the plastic chair mould to improve the surface abrasion resistance of the plastic chair mould parts, thereby better improving the quality of the plastic chair mould. For surface strengthening, different strengthening methods should be selected according to different plastic chair moulds. For example, the blanking die can adopt electric spark strengthening and hard alloy surfacing to improve the wear resistance and compressive strength of the surface layer of plastic chair die parts. Hot-working dies steel parts such as die-casting dies and plastic dies can be nitrided (hard nitrided) to improve the wear resistance, thermal fatigue resistance and wear resistance of the parts. Deep drawing die and bending die can be sulphurized to reduce the friction coefficient and improve wear resistance of materials. Carbonitriding (soft nitriding) can be applied to the surface strengthening the treatment of various plastic chair mould. 5] The correct use and maintenance of plastic chair mould is also a major factor in improving the quality of plastic chair mould. For example, the installation and debugging method of plastic chair mould should be appropriate. In the case of a hot runner, the power supply wiring should be correct, the cooling water channel should meet the design requirements, and the parameters of the injection moulding machine, die casting machine and press machine in the production of the mould should conform to the design requirements, etc. When the plastic chair mould is used correctly, the mould shall be maintained regularly. The guideposts, guide sleeves and other parts with relative movement of the plastic chair mould shall be filled with lubricating oil frequently. Lubricant or stripping agent shall be sprayed on the surface of the formed parts before each mould is formed for moulds such as forging moulds, plastic moulds and die casting moulds. If you are interested in our products, you can click Dustbin Mould https://www.furnituremould.com/ to learn more information.