The characteristics of the plastic mold heat treatment - - - - - - - Xiang in the plastic
( A) Carburizing steel plastic mold heat treatment characteristics of 1. With high hardness, high wear resistance and high toughness of plastic mould, should choose carburizing steel to make, and carburizing, quenching and low temperature tempering as the final heat treatment. 2. Requirements of the carburized layer, generally the thickness of the carburized layer of 0. 8 to 1. 5 mm, when pressing containing hard packing plastic mould carburizing layer thickness requirements of 1. 3 to 1. 5 mm, pressing soft plastic carburizing layer thickness of 0. 8 to 1. 2mm。 Carburizing layer of carbon content is 0. 7% ~ 1. 0% is preferred. If using carbon and nitrogen were permeability, wear resistance, corrosion resistance, oxidation resistance, prevent stickiness is better. 3. Carburizing temperature is in commonly 900 ~ 920 ℃, small complex cavity mould desirable carbonitriding in 840 ~ 860 ℃ temperature. Carburizing heat preservation time is 5 ~ 10 h, specific answer to choose according to the requirements of carbonitriding layer thickness. Carburizing process based on hierarchical carburizing process, namely high temperature stage ( 900～920℃) Give priority to with rapid infiltration of the carbon parts surface; Medium temperature stage ( 820～840℃) To increase the thickness of carburized layer is given priority to, so in the carburized layer to establish uniform and reasonable distribution of carbon concentration gradient, facilitate direct quenching. 4. After carburizing and quenching process according to different steel grade, after carburizing can be respectively used: reheated quenching; Classification of direct quenching after carburizing ( Such as alloy carburizing steel) ; Medium temperature direct quenching after carbonitriding ( If use industrial pure iron or mild steel cold extrusion forming of small precision mould) ; Air cooling quenching after carburizing ( Such as high alloy carburizing steel manufacturing large and medium-sized mold) 。 ( 2) Hardened steel plastic mold heat treatment 1. Shape more complex mould, after the heat treatment, rough machining and finish machining, to ensure minimum deformation during heat treatment, for precision mould, deformation should be less than 0. 05%. 2. Plastic model cavity surface is very strict, so to ensure that in the process of quench heating cavity surface oxidation, decarburization, erosion, overheating, etc. Should be in a protective atmosphere furnace or after strict DNA in the salt bath furnace heating, if using common box type resistance furnace heating, should be coated on the surface of the cavity protective agent, at the same time to control the heating rate, cooling should choose more moderate cooling medium, control of cooling speed, in order to avoid in the process of quenching deformation, cracking and scrap. General with hot bath quenching is beautiful, also can adopt the precooling quenching. 3. Should be timely tempering after quenching and tempering temperature is higher than that of mould temperature, tempering time should be sufficient, long myopic mould material and section size, but at least in more than 40 ~ 60 min. ( 3) Hard plastic die steel heat treatment 1. Pre hardened steel is hard supply, generally do not need to heat treatment, but sometimes I need to change forging, die blanks must be heat treatment after forging. 2. Forecasts in advance of hard steel usually adopts the spheroidizing annealing heat treatment, the purpose is to eliminate forging stress and obtain uniform spheroidal pearlite structure, reduce the hardness, improve plasticity and improve the machining performance of die blanks or cold extrusion forming performance. 3. Pre hardened steel, hard process simple, most use conditioning treatment, obtain tempered sorbite structure after quenched and tempered. High temperature tempering temperature range is very wide can meet all kinds of work that the mold hardness requirements. Because this kind of steel hardenability is good, the quenching oil cooling, air cooling, or can be used when nitrate quenching classification. Table 3 - 27 for part of the pre hardened steel, hard process, for your reference.
Cosmetic tube field, where is the foothold in the future?
Nowadays, in order to meet the changing needs of consumers, whether it is basic skin care brands or efficacy brands, when most of them launch new series of products, they will launch matching products with instruments, aiming to realize the effective incorporation of brands through high-tech instruments.
Development of cosmetics to promote the development of tube packaging
With the rapid development of composite technology of plastics and different materials, composite tube gradually enters a variety of different packaging fields, such as high quality cosmetics, with its excellent water resistance, oxygen resistance and other properties and good convenience. This is changing the traditional concept of plastic composite tube packaging only for simple packaging of low-grade products.
What are the customers' concerns about cosmetic packaging enterprises
In the choice of cosmetics package enterprises, first of all to see whether the qualification of the enterprise is in line with the requirements of the national cosmetic package production. If the enterprise's qualification is blurred, it shows that the enterprise does not meet the national production requirements and the quality of the product can not be guaranteed. So when choosing cosmetic packaging enterprises, we must check the production qualification of enterprises.
The importance of cosmetic packaging
Cosmetics are necessaries of our life, but its mission to beautiful life makes it a opportunities which contains huge business. The consumer market should not be ignored, as the competition of cosmetics market is more and more fierce, each tube cosmetics businesses is aim for expanding their product sales, which have struggled to the cosmetics packaging and publicity.
What is the two in one tube and how to fill it in the rear? And the application of the product in skin care
Unlike a single branch tube, the most intuitive tube is a tube in the tube, which looks like a single branch, but can fill two kinds of material at the same time, at the same time extruding. When the material is not used, the material body is separated, and when used, mingling and merging.
About D19 Vibration eye cream tube
Innovative and practical packaging materials not only greatly improve the manufacturing technology, but also have more advantages in practicality than traditional packaging materials. This is a high-tech eye cream hose, bringing the eye cream package into a brand new era.
Types and characteristics of cosmetic tube
Tubes are divided into single-layer, double-layer and five-layer tubes, which are different in anti-pressure, anti-penetration and hand feeling. For example, five-layer tube is divided into outer layer, inner layer and two bonding layer, and another barrier layer.
How do small and medium-sized enterprises develop product of cosmetics.
1. Don’t make too many products. There are more and more small and medium-sized cosmetic manufacturers. Their products almost cover all kinds of cosmetics. You can see that there are many products, but in fact, they have many disadvantages. The first one is that the sales volume is not necessarily high. The 80/20 law states that 80% of the benefits of any entity come from 20% of the products, that is, 80% of the products can only contribute 20% of the benefits, which is not economic. The second one is that too many product lines are relatively backward in management, and their own strength is insufficient, enterprises can’t grasp the dynamics of consumers' hearts, so there are a lot of products which are not need by consumers. Third, most companies focus on speculation and bargain hunting. Too many product lines limit the development of an enterprise. It is difficult for consumers to form an understanding of the enterprise without a major product. And it is impossible to find the market position without the c
2018 Shanghai big Hongqiao fair, Guangzhou LISSON Plastic Co., Ltd. and you will be there
2018 the fair will again be strong in the Shanghai National Convention and Exhibition Center on 5.19-21 day, and Guangzhou LISSON Plastic Co., Ltd. will come to the same time. We will meet the exhibition with such products as non vibratory eye cream import instrument, double roller unique design hose and so on, and then lift the storm event of the whole industry chain!