The main materials of thin-walled molds are mostly made of high-quality alloy steel, especially high-life molds, which are often made of Crl2, CrWMn and other Leysite steel. This type of steel has strict requirements from rough forging, processing and heat treatment. Therefore, the preparation of the processing technology can not be ignored, heat treatment deformation is also a problem that needs to be taken seriously in processing.
PDV is a high purity, fine cubic-crystal salt, especially manufactured to remove all the
residual chemicals and impurities found in salt.
1.
Pdv Salt, Sodium Chloride content ≥ 99.5%,
White.
2.
English name:sodium chloride
3.
Molecular formula:NaCl
4.
Package: 25kg / bag
or 1000kg/jumbo bag
5.
CAS:7647-14-5
6.
Delivery time:30 days
Specifications:
Items
Sodium Chloride
Moisture
Water Insolubles
Pb
As
Hg
Cd
Whiteness
Size
Unit
%
%
%
mg/kg
mg/kg
mg/kg
mg/kg
mm
Standard
≥99.10
≤0.30
≤0.05
≤1.00
≤0.50
0
0
82
0.15-0.95
Results
99.58
0.12
0.00
0.00
0.00
0.00
0.00
89
Pass
pass
Pass
Pass
Pass
Pass
Pass
Pass
Applications :
Food & Drink
PDV,
Granular and Tablet salt all play their part in the food manufacturing
processes either as a food ingredient or as a water softening salt used on the
plant.
Textiles & Dyes
Salt(Sodium
Chloride) is added when dying cotton and viscose textiles to assist in fixing
the dye. In dye manufacture, salt can be used to bring the dye out of solution
at the end of the manufacturing process, a technique known as 'salting out'.
Salt can also be used in the 'standardisation' of dye mixes, to ensure
uniformity of dye strengths between different batches. Finally, salt is
sometimes used as a grinding agent to reduce the dye compounds to a powder.
Personal Care & Health
Regarding the characteristics of thin-wall mold processing, the main ones are:
First, the mold material is excellent, the hardness is high:
The main materials of thin-walled molds are mostly made of high-quality alloy steel, especially high-life molds, which are often made of Crl2, CrWMn and other Leysite steel. This type of steel has strict requirements from rough forging, processing and heat treatment. Therefore, the preparation of the processing technology can not be ignored, heat treatment deformation is also a problem that needs to be taken seriously in processing.
Second, the batch size is small:
The production of thin-walled molds is not mass-produced in large quantities, and in many cases, only one is produced.
Third, the complex shape:
Some products, such as automobile covers, aircraft parts, toys, and household appliances, have a shape that is composed of a variety of curved surfaces. Therefore, the mold cavity surface is complicated. Some surfaces must be processed mathematically.
Fourth, copy processing:
In the production of thin-walled molds, there are sometimes no drawings and no data, and it is necessary to carry out profiling processing according to the actual objects. This requires high precision and no distortion.
Five, more processes:
Various processes such as milling, boring, drilling, reaming and tapping are always used in the processing of thin-walled molds.
Sixth, the use of repetitive production molds has a long life. When the use of a mold exceeds its life, a new mold is replaced, so the production of the mold is often repetitive.
The service life of thin-walled molds is closely related to the correct maintenance. In reality, there are too many cases of mold scrapping due to improper maintenance. We have been working on molds for such a 20-year period, and we can’t remember how many accidents we encountered. Since then, some molds have been developed for more than ten thousand yuan. No products have been used, but the molds have been made out of disappointment. It is a pity. The following summarizes the basic maintenance knowledge of the most basic plastic molds, so that the customer's plastic machine adjusts the basic maintenance habits, thus extending the service life of thin-walled molds:
First, the maintenance of the mold before production
A. The oil on the surface of the mold must be cleaned. The rust should be cleaned. Check the cooling water hole of the casting mold for foreign matter. Is there a waterway?
B. It is necessary to check whether the arc in the mold rubber sleeve is damaged, whether there is residual foreign matter, whether the moving part is abnormal, and whether the movement is smooth.
Second, the maintenance of thin-walled molds in production
1. Check all guiding guide columns of the mold every day, whether the guide sleeve is damaged, including the mold guide column, row position and other components, regularly refueling and maintenance, and maintenance twice a day.
2. Clean the foreign body glue wire, foreign matter, oil, etc. of the mold parting surface and the exhaust groove and check whether the thimble of the mold is abnormal and regularly oil. The mold surface and the flow surface are cleaned twice a day. Guide the tip, bushing, and position to determine the tip of the oil once a day.
3. Regularly check whether the water path of the mold is unblocked and tighten all the fastening screws.
4. Check if the limit switch of the mold is abnormal, and the oblique pin. The oblique top is abnormal.
Third, the maintenance of the thin wall mold
1. Before shutting down, the cooling water circuit must be closed, the residual water in the water path in the mold should be blown off, and the residual rubber wire on the surface of the mold should be inspected. The foreign matter should be cleaned and evenly sprayed with anti-rust agent to accurately fill in the relevant records. For more information, please pay attention to the thin-walled mold http://
Http://news.chinawj.com.cn Submission:
Salt (Sodium Chloride) is a well known flavour, preservative and a
texturiser.
Chemicals & Manufacturing Used in many manufacturing processes and as a raw
material in the chemical industry
Pdv Salt,Food Grade Pdv Salt,Pdv Refined Salt,Iodized Pdv Salt
Weifang Xinchang Chemical Co.,Ltd , http://www.xinchangchem.com