ã€China Aluminum Industry Network】 has a set of extrusion dies, 1800 ton machine φ184 extrusion tube, aluminum profile side with 40 * 40mm cavity, wall thickness of 2.5mm, connected with a 0.8mm wall thickness of the arc arm Extending to the other side, the profile has a total external diameter of 210mm, a cantilever diameter of 170mm, a larger arc length, a weight of about 1.5 meters, and a large and small machine can no longer be produced. It must be produced on a φ184 drum, which is an extension die. . Due to the substantial difference in the thickness of the two side walls, the thin-walled arc portion must exit the working belt first, and the thin-walled portion of the distal expansion portion must exit first. Out of the slow wrinkle in the work zone, out of the thick place to bend the material wrapped 10 times to block 7 times. After taking a thin wall out to remove the shovel and flatten it again on the machine (note that the rod should be short for high temperature to replace the mold to be compact), 2-3 times in succession, the number of mold plugging is reduced to 11 to 2. There is also an extrusion die, aluminum outer diameter 80*80mm, outer wall 4mm, inner diameter 2.5mm, there are a variety of shapes and sizes male 12, the middle male is particularly small, after the machine is pressed on some male Partial or even broken, followed by blockage, not stopping after blocking, the male breaks more. This set of molds is designed to provide customers with one-off molds, and the amount of more than 2 tons of aluminum profiles, customers provide 3 sets of mold models. Aluminium was produced for 2 months. The extrusion die scraped N sets, and no qualified material was produced. All of the extrusion die was damaged due to die blocking. Later we adopted the following method: 1. The middle part of the work belt as a whole to reduce the resistance; 2. The empty knife and drainage trough are all smooth to reduce adhesion and friction; 3. Male pylons are lowered to reduce collisions and swings; 4. High temperature and slow pressure, when the aluminum will be out of the mold when the work of the mold, in the middle part of the mold coated with graphite lubricant after the slow lubrication, extrusion profile pad good floor guide good straightness, Not shaking. With 2 sets of molds to produce 2 tons of multi-profiles, only a slight deviation in the middle ribs, customers accept, complete the task. The more complex the shapes of aluminum profiles, the more difficult it is to produce aluminum, and the more attention must be paid to uneven flow rates. The extrusion die should adopt the high temperature and slow extrusion method to complete the higher principle instead of grabbing the speed and grab the output. Pe Plastic Sheet, full name is Polyethylene Sheet.
Physical properties: PE plastic Sheet is the most simple structure of the macromolecular organic compounds, the world's most widely used polymer materials, composed of ethylene polymerization, depending on the density is divided into high density polyethylene, medium density polyethylene and low density polyethylene.
(5) UHMWPE Sheet
Ultra high molecular weight polyethylene is very strong and can be used for body armor.
7. Wharf: anti-collision board.
Color: natural color is wax white, also can be customized black and color, the order of the color to order is 500KG.
Combustion characteristics:
Combustion flame status: molten drop, yellow lower blue
After the fire: continue to bur
Smell: the smell of wax burning
Product certification: most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.
Pe Plastic Sheet,White Pe Plate,Standard Material Pe Plastic,Transparent Pe Plastic Sheet Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com
(1) LDPE Sheet
Low density polyethylene Sheet (also known as high pressure polyethylene Sheet)
(2) LLDPE Sheet
Linear low density polyethylene
(3) MDPE Sheet
Medium density polyethylene
(4) HDPE Sheet
High density polyethylene (also known as low pressure polyethylene)
(6)Modified polyethylene sheet
Chlorinated polyethylene (CPE) and crosslinked polyethylene (PEX)
(7)Ethylene - ethylene copolymer
Ethylene/propylene copolymer (plastic), EVA, ethylene, ethylene butene copolymer - other olefins, such as octene POE, cyclic olefin copolymer, ethylene/unsaturated ester copolymer (EAA, EMAA, EEA, EMA, EMMA, EMAH).
Polyethylene, which has a molecular weight of 3 million to 6 million, is known as UHMWPE.
1. Papermaking industry: suction box board, scraper, molding plate, bearing, gear;
2. Mining industry: charging barrel, abrasive and adhesive-resistant back lining for warehouses;
3. Chemical industry: acid pump, filter plate, worm gear, bearing;
4. Food industry: packing machinery parts, bottle guide, screw, wear plate, slide way, stud weld, roller and other transmission parts;
5. Textile industry:buffer board;
6. Food processing industry: chopping block, refrigerating plant;
1. Acid and alkali resistance, resistance to organic solvents
2. Excellent electrical insulation and static resistance
3, Can still maintain a certain touness even at low temperature
4. Extremely high impact strength
5. Low friction coefficient
6. Non-toxic
7. Low water absorption
8.Lower density than any other thermoplastic plastics (<1g/cm3)
Disadvantages:
PE Plastic sheet have Weak mechanical property, air permeability, easy deformation, easy ageing, brittle, brittle less than PP, easy stress cracking, surface hardness, easy to scratch.
Difficult to print, in printing, surface discharge treatment, cannot electroplating, the surface has no luster.
Specification: the diameter of the PE rod can be produced from 2mm to 250mm. The conventional length is 1000mm, and the length is unlimited.
The thickness of PE sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of10-180mm is 600*1200mm.PE sheet can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited
Add antistatic agent to the permanent antistatic electric bar, and the volume resistance value is between 6 to 9 power of 10.Add flame retardant to the flame retardant rod from UL 94V-0 to HB flame retardant grade, and other modification requirements are required to customize various additional properties according to the actual use of the customer.