[China Aluminum Network] Doors, windows, and curtain walls can not be separated from aluminum, glass, door and window hardware, steel and other materials, the basic knowledge of these materials do you know how much? Today, the Chinese curtain wall network ALwindoor.com Xiaobian through a question and answer The way to organize the basic knowledge of these materials for your reference!
Aluminum section
1. Please briefly describe the process flow of aluminum profiles.
A: Aluminum ingots - Aluminum rods - Preheating of aluminum rods - Extrusion - Cooling - Straightening - Lengthening - Artificial aging - Surface treatment (oxidation, spraying, etc.) - Packaging - Transportation
2. Please briefly describe the difference between 6063-T5 and 6063-T6? What is the difference between 6063-6063A? Are there any differences between the four prices?
A: T6 means that when the aluminum extrusion is extruded, water cooling or liquid nitrogen is used for cooling. T5 indicates air cooling or natural cooling in the air. A represents the difference in type and content of the alloy, resulting in higher tensile strength of the 6063A. 6063 is slightly higher in price than T5, and 6063A is higher than 6063.
3. What is the process of aluminum mold opening?
A: Drawing Design---Drawing---Dual Confirmation---Mold Design---Machining---Quenching---Wire Cutting-Quenching---Assembling---Nitriding---On the Machine Test mode.
4. What is the processing length of the aluminum profile?
A: Generally speaking, the aluminum profile has a larger processing size of 7.2 meters and a smaller processing length of 3.2 meters. However, there are exceptions when CCTV has processed 12 meters long profiles.
Glass section
1. What are the advantages and disadvantages of offline LOW-E and online LOW-E?
Advantages of online glass: can be used single-chip, can be glued, bendable steel, cheaper than the offline price of 20 yuan / square meter. Disadvantages: The color is only a single high-transparent and blue-gray two colors, easy to appear color, single glass using thermal insulation performance is poor.
2. Please briefly describe the respective 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 a small particle after crushing and belongs to safety glass. It can withstand a sudden temperature change of 250-320 degrees. The disadvantage is that there is a self-explosion phenomenon, which cannot be cut, and the flatness after tempering is reduced.
The strength of semi-tempered glass is between normal glass and tempered glass; it is not easy to blew; the flatness is good; but the heat resistance and impact resistance are inferior to tempering.
3. What are the thicknesses of glass that the current manufacturer can produce and what is the larger size?
A: 1 Currently used glass thickness: 3 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 19 mm, 22 mm, 25 mm.
2. The size of the manufacturer's stock inventory board: 2440 mm×3300 mm/3660 mm, 2100 mm×3300 mm/3660 mm.
3.Float line can pull out the length (equipment limit, take south glass as an example):
6 mm thick plate ≤ 5 m; 8 mm thick plate ≤ 6 m
10 mm thick board ≤ 9m; 12 mm thick board ≤ 9m
15 mm thick plate ≤ 10 m; 19 mm thick plate ≤ 10 m
This is the design and processing size of the manufacturer's equipment, which depends on the actual strength of the glass, market, and other factors.
4. How are the processing dimensions of current tempering, laminating, color glaze, coating, hollow synthesis, etc.?
A: Tempering Furnace: Normally length × width = 6m × 2.4m, currently on the market can be longer length × width = 12m × 2.4m.
Autoclave: length × width = 7.8 m × 2.4 m.
Color glaze line: length × width = 4.5 meters × 2.4 meters.
Hollow line: length × width = 6 meters × 2.4 meters.
Usually length × width = 3.5 meters × 2.4 meters.
Coating line: length × width = 6 m × 2.4 m (larger currently only CSG has).
Usually length × width = 4.5 meters × 2.4 meters (standard).
Common width of hollow aluminum frame: 6mm, 9mm, 12mm, 16mm
5. What is the difference between hot bending and bending tempering and whether they belong to safety glass?
A: The hot bending glass is heated to soften the glass temperature, and then rely on their own weight or external force bending and forming after its natural cooling; bending tempered glass is formed after changing the curve with a special device for rapid air cooling; Glass does not belong to safety glass, curved steel glass belongs to safety glass.
6. What is the range of hot bending and bending steel processing dimensions?
Answer: 1. Since hot bending glass is used for mold processing, in principle, as long as the mold is made out, the glass can be bent.
2. The smaller radius of the curved steel is 500mm, the larger arc length is 3000mm, and the greater height is 3000mm. But usually the smaller radius of the manufacturer is not less than 1500mm.
7. Can hollow LOW-E glass be bent steel? If there is no limit to this, can double laminated glass be LOW-E?
Answer: 1. As the steel is heated during bending, the LOW-E layer will experience high temperature changes, so the LOW-E glass is generally not bent steel, but the CSG and epithelium do some adjustments to the process, some of the color can be carried out Bend steel treatment. CSG's bendable LOW-E is: CES11-80S/TB, CEB14-50S/TB, CEB14-60S/TB, CEF16-50S/TB, which are colorless, light gray, cold gray, blue gray; epithelial The bendable LOW-E is: YBE0180, YBE0152, YBE0140, color is colorless, light blue, silver gray.
2. The laminated glass can not be used unless it is made of hollow laminated glass with hollow glass. The reasons are as follows:
a. The film will come into contact with the LOW-E layer.
b. LOW-E can be used only with the hollow glass to make the effect of heat insulation and heat insulation good, use it alone does not make sense, not as good as the use of heat reflective coated glass.
8. Please briefly describe the cause of the glass explosion and the main factors that affect the glass self-explosion. How to reduce the glass blew rate?
Answer: 1 Because of the instability of nickel sulphide crystals in the interior of the glass, the volume of the nickel sulphide crystals changes due to the impact of external forces or changes in temperature, resulting in glass breakage; the main factors causing bleed are changes in temperature, drilling and The presence of cut corners and external forces. (2) Chamfering of chamfered and chamfered parts should be performed to minimize stress concentration; hot dipping treatment should be applied to the glass.
9. Commonly-used configuration glass market price list: (in case of South Glass)
Door and window hardware
1. What are the manufacturers of door and window hardware fittings at home and abroad?
A: There are many domestic manufacturers of production accessories, more famous are Jianlang Hardware, Guoqiang, Guangdong Hehe, Dongcheng, Weiyuan, Lixing Young's and other manufacturers; foreign manufacturers have Noto (ROTO), Gewu ( GU), SIEGNIE, SAVIO; commonly used materials are zinc-aluminum alloys.
2. Take a hardware product as an example, please specify the type of hardware required for the curtain wall opening fan four-point lock, inner flat open, outer flat open, and inner open window, and the price of the more commonly used open fan (open market price) ?
A: 1 open fan: 1 large handle (94 yuan), 1 pair of corners (70 yuan), 4 small lock blocks (6 yuan/piece), 2 locks (12 yuan/piece), hinge 1 To (according to the actual situation), 1 pair of telescopic arm (according to the actual situation), a few meters of the transmission rod (for mold manufacturers to open products)
2 inside open: 1 large handle, 1 hinge, 1 small lock block, lock head, if the window width is more than 600, add a corner, a few meters of transmission rod (for the profile manufacturers to open the model products), limit the wind support One.
3 outside the flat open: a small handle, a transmission box, a large lock block, a small lock, if the window width is greater than 600 need to add a corner, a few meters of transmission rod (for the mold manufacturers mold products), hinge 1 pair .
4 open within the inverted: according to a full set of purchase (about 600 yuan / set).
3. Window fasteners have been active in the door, window, and curtain wall industry for 18 years with its stable quality and excellent service.
Our products include self-tapping screws, self-tapping self-drilling nails, fiberboard nails, various types of tail-cutting self-tapping screws, expansion bolts, gas nails, etc.
Materials are: carbon steel, stainless steel
Surface treatment: galvanized, hot rusted treasure, disco, etc.
Steel section
1. Please list the material grades of square tube, angle steel, steel plate, steel bar and seamless steel pipe.
A: The square tube, angle steel material is Q235, steel plate, steel material is Q235B, seamless tube material is 20# steel.
2. Where is the larger steel distribution center in South China?
A: The focus is on Lecong in Foshan. A lot of other manufacturers in Shenzhen also have steel trading at Shekou Port.
3. How to distinguish between non-standard steel and GB steel?
Answer: It can be distinguished from the lower wall thickness deviation of steel products. The deviation of the wall thickness of the national standard steel is generally around -0.25. For example, if the 4mm-thick square tube national standard is above 3.75, the non-standard one will have a difference of some or even just around 3.3; the national standard The angle cut at the end of the angle steel is better than that at the end of the non-standard angle steel; otherwise, if the national standard and non-standard can't be clearly distinguished, then the purchase will be carried out according to the manufacturer specified by our company. Other manufacturers may not purchase.
4. Why is seamless steel pipe in the market a mess?
A: The length of the seamless pipe is different because the two pieces of the seamless pipe drawn from the cold-drawn pipe have to be cut at both ends. The length of the cut is based on the quality of the two ends, so some are longer and some are shorter.
5. What are the specifications of commonly used steel in the market?
Answer: See Table 1 below for square tube
2. Rectangular square tube
3. Equal angle steel
4. Unequal angle steel
5. I-beam
6. Channel steel
7. Seamless steel pipe
8. Slit tube (welded tube)
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