Aluminum profile
1. Aluminum profile processing process?
Answer: aluminum ingot -- aluminum rod -- aluminum rod preheating -- extrusion -- cooling -- straightening -- sizing -- artificial aging -- surface treatment (oxidation, spraying, etc.) -- packaging -- Transportation
2. The difference between 6063-T5 and 6063-T6? The difference between 6063 and 6063A? Is there any difference in price among the four?
Answer: T6 indicates that when the aluminum profile is extruded, it is cooled by water cooling or liquid nitrogen, while T5 indicates that it is cooled by air cooling or natural cooling in the air; A indicates that the types and contents of the alloy are different, the tensile strength of 6063A is higher than 6063, T6 is slightly higher than T5 and 6063A is higher than 6063 in price.
3. What is the process of aluminum mold opening?
Answer: drawing design -- tracing -- both parties confirm -- mold design -- machining -- quenching -- wire cutting -- quenching -- assembly -- nitridation -- machine test mode.
4. What is the processing length of aluminum profile?
Answer: Generally speaking, the size of aluminum profile regular is 6 meters, the maximum processing size is 7.2 meters, and the minimum processing length is 3.2 meters. However, there are exceptions that CCTV once processed 12 meters long profiles.
Glass
1. What are the advantages and disadvantages of offline LOW-E and online LOW-E?
Answer: advantages of online glass: it can be used in a single piece, can be laminated, can be bent steel, and the price is cheaper than offline. Disadvantages: single color only has two colors of high permeability and blue gray, prone to chromatic aberration, and poor thermal insulation performance of single glass.
2. What are the advantages and disadvantages of tempered glass and semi-tempered glass?
Answer: the strength of tempered glass is 4-5 times that of ordinary glass; It becomes small particles after being broken, which belongs to safety glass; It can withstand temperature mutation of 250-320 degrees, and its disadvantages are self-explosion phenomenon, inability to cut, the flatness decreases after tempering. The strength of semi-tempered glass is between ordinary glass and tempered glass; It is not easy to explode; The flatness is good; But the heat resistance and impact resistance are inferior to tempered glass.
3. What are the thickness of glass that manufacturers can produce at present? What is the maximum size?
Answer:
① currently, the commonly used glass thickness is: 3mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 19mm, 22mm, 25mm.
②. Specifications of the large board in the factory's standing stock: 2440mm × 3300mm /3660mm, 2100mm × 3300mm /3660mm.
③. The length of float line can be pulled out (take general manufacturers as an example):
6 mm plate ≤ 5m;8 mm plate ≤ 6 m
10 mm plate ≤ 9m;12 mm plate ≤ 9m
15 mm plate ≤ 10m;19 mm plate ≤ 10m
this is the design and processing size of the manufacturer's equipment, which depends on the actual strength of the glass, the market and other factors.
4. What is the processing size of current equipment such as tempering, laminated, colored glaze, coating, hollow synthesis?
Answer: toughening furnace: usually the length × Width = 6 m × 2.4 m. Currently, the maximum length × Width = 12 m × 2.4 m can be achieved in the market.
Autoclave: length × Width = 7.8 m × 2.4 m.
Colored Glaze line: length × Width = 4.5 m × 2.4 m.
Hollow line: length × Width = 6 m × 2.4 m.
Usually length × Width = 3.5 m × 2.4 m.
Coating Line: length × Width = 6 m × 2.4 m
usually length × Width = 4.5 m × 2.4 m (standard).
Common width of hollow aluminum frame: 6mm, 9mm, 12mm, 16mm
5. What is the difference between hot bending and bending tempering, and whether it belongs to safety glass?
Answer: Hot bending glass is formed by heating the glass to softening temperature, then bending it by self-weight or external force and naturally cooling it; curved tempered glass is made by quick air cooling with special equipment after bending forming; Hot bending glass is not safety glass, curve steel glass is safety glass.
6. What is the range of hot bending and curve steel processing dimensions?
Answer:
①. Since hot bending glass is processed by mold, in principle, as long as the mold is made, the glass can be hot bent.
②. The minimum radius of curve steel is 500mm, the maximum arc length is 3000mm, and the maximum height is 3000mm. But usually the minimum radius of the manufacturer is not less than 1500mm.
7. Can Hollow LOW-E glass be curve steel? Is there any limit if it can be done? Can double laminated glass be made into LOW-E?
Answer:
①. Since it needs to be heated at Curve Steel, the LOW-E layer will change when it encounters high temperature, so LOW-E glass is generally not curve steel.
②. Laminated glass cannot be used unless it is used together with hollow glass to form hollow laminated glass. The reasons are as follows:
a. The film will be degummed when it comes into contact with LOW-E layers.
B. LOW-E only with insulating glass can the function of heat insulation and heat preservation be brought into full play. It is meaningless to use it alone. It is better to use heat reflection coated glass.
8. Causes of glass self-explosion and main factors affecting glass self-explosion? How to reduce the self-explosion rate of glass?
Answer:
① due to the instability of nickel sulfide crystal in the glass, the volume of nickel sulfide crystal particles changes when encountering external force impact or temperature changes, thus causing the glass to break; the main factors causing self-explosion are the change of temperature, the existence of drilling and cutting angle and the external force.
② Chamfering should be carried out on the drilling and cutting parts to minimize the concentration of stress; Hot dipping treatment should be carried out on the glass.
