Office furniture materials knowledge Daquan

(1) Office furniture - aluminum
Aluminum belongs to the category of non-ferrous metals , due to the wider application separately described as follows: There are aluminum and die-cast aluminum alloy commonly used in two ways. Mainly by the purity of more than 92% of the main raw material ingot , while adding to increase strength, hardness , wear resistance and other properties of the metal elements , such as carbon, magnesium , silicon, sulfur, etc. , consisting of a plurality of components " alloys ."
1.1 aluminum
common as aluminum screens, aluminum windows and so on. It is manufactured using extrusion process , i.e. the raw materials such as aluminum ingot is melted in the furnace , the mold extruded by extrusion molding outflows , it can be extruded in different sections of the various profiles . The main performance that strength, hardness, wear resistance according to national standard GB6063. Advantages are: light weight of only 2.8 , no rust, design changes quickly, mold into a low , longitudinal elongation of up to 10 meters or more. Shiny aluminum exterior , matte points, its treatment process using anodized oxide surface treatment to reach 0.12m / m thickness. Aluminum wall thickness according to the optimization of product design options, not as thick as possible on the market , should see the design requirements of the sectional structure , it can be 0.5 ~ 5mm uneven . The thicker the more hardline outsiders think , in fact, is the wrong way .

Quality aluminum surface defects are also more difficult to overcome : warping , distortion, black line , punch and white lines. High levels of designers who design and produce molds and reasonable process , to avoid the defect is not obvious . Check the defect inspection method shall be prescribed by the State , namely the horizon 40 ~ 50CM to determine defects.
Aluminum furniture in a wide range of uses : the wall skeleton, various suspension beams , table legs, trim, handles, go trough and lid , chair tube , etc. , can be ever-changing design and use ! Although the advantages of multi-

aluminum , but there is not the ideal place : Aluminum
without oxidation treatment is easy to " rust " which leads to performance degradation , less than the longitudinal strength of the surface of iron products . wear resistance of the oxide layer plating scratches easily compare . higher cost , higher costs relative ironwork about 3 to 4 times.

1.2
die-cast aluminum alloy die casting and profile processing method compared to the use of equipment are different, it 's raw materials to aluminum ingots ( about 92% purity ) and alloy materials, the furnace to melt into the die casting machine the molding . Die-cast aluminum product shape can be designed as imaging toys , shapes, convenient connections in all directions , in addition, its high hardness strength , and can be mixed with zinc to zinc-aluminum alloy .
Die-cast aluminum molding process of :
1, casting
2, rough polishing to mold than expected
3, fine polishing ;

the other hand, the production of aluminum die-casting process , should die in order to manufacture its mold cost is very expensive , are higher than other mold injection molds. Meanwhile, mold maintenance is very difficult to design a material error is less difficult to repair .
Aluminum Disadvantages :
number of each production process should be more , the cost was low . Polishing is more complex than the production cost of the product cycle slow injection of about 3 to 4 times higher . Requirements should be bigger screw holes (diameter 4.5mm) connector force was stable Adaptation: legs, Pantai fittings, decorative head , aluminum sealing parts, such as table and coffee table backwater , a very wide range .

( 2 ) Office furniture - Hardware
" Hardware " concept is a popular saying , the standard classification should be divided into two major categories of ferrous and non-ferrous metals , used in furniture, it has a tubular , rod , plate, wire , horn several

2.1 ferrous metals piece
mainly refers to iron products, which advantages are: resistance to deformation, ultra-high strength , wear resistance, high hardness , low price, long life. Is a carbon alloy, it points to the high -carbon steel , low carbon steel , carbon steel ; its sub- tube, square tube , angle iron , steel categories . Pipe class products mainly for chairs ; square tube for beams , brackets and the like; steel is mainly used for tables, baffles , wall plates , ornaments, corbels , metal cabinets , doors, etc. .

Steel products Disadvantages :
1, rust
2, the volume of re-
3, afraid of wet
address these deficiencies methods plating , painting, blue- black hair treatment .

Hardware molding methods more : bending, punching , drilling, welding, cutting, pressing shape. In summary , the product according to the design requirements or requirements for processing .

2.2 nonferrous metal pieces
means everything except iron products outside metal parts such as: aluminum, copper , zinc and stainless steel. It has a feature not easy to rust , poor strength than black metal , used in many furniture are: aluminum, aluminum bar , stainless steel pipe , stainless steel, copper , zinc plate .
Stainless steel parts : stainless steel iron and stainless steel parts of two categories : often called " 430 " as the stainless steel iron, " 304" is pure stainless steel , one of them discriminating method : magnet test , " 430" magnet can suck , and " 304 " is not . Slightly higher than the proportion of stainless steel parts iron products, iron products, higher prices than 4 times , so that only high-end products before use .

Copper : Copper of copper and copper alloys. Copper also known as copper , hardness strength is poor, but good toughness. Copper alloys used in furniture more brass , which is a zinc -based alloy of copper . Slightly higher copper prices , " 304" stainless steel copper from 30 to 40 percent , while the brass is 20% lower than the price of copper . Copper alloy hardness, strength than stainless steel copper slightly higher, but easily broken , brittle. Furniture is mainly applied copper handle , embedded screws. In order to prevent the " rust " after going to use copper plating generally , and brass is not required , fewer large-scale use in furniture products.

Zinc products : the use of less pure zinc products , primarily zinc alloy or steel combination. Such as galvanized sheet , electrolytic plates. Furniture use less , due to the poor strength of zinc products . Zinc alloy buckle accessories such as eccentric , structural connection points ( pieces ) and so on. Zinc alloy is slightly lower than the proportion of about 6.8 iron , steel and aluminum prices ranged between majority zinc alloy die-casting in the form of pieces of furniture accessories
production of titanium, zirconium alloys : These are more expensive metal , it is used for furniture form the majority in plating for high-grade handles, hinges and fittings or exposed high gear among hotel furniture . Its cost is higher than the chrome plating costs about 40% , but the appearance of high-end products like gold and silver , very good abrasion resistance , will not rust .

2.3
casting metal furniture hardware products have many uses castings, such as handles, hinges , etc. , the current market popular kinds of casting production process many ways , such as: casting process , casting process , casting process . Casting materials are brass, stainless steel, zinc -tin alloy , aluminum alloy . Casting Features: exquisite, uniquely shaped and so on. The disadvantage of a single piece of high costs, costs are different in different casting process , roughly high to low , casting casting die casting , mold cost is high to low is: die casting casting casting . Casting products Disadvantages are: a slight increase in the production cycle , the product should after 2 to 3 steps in order to make qualified parts, and accessories but also according to different requirements or plating , polishing , drawing, sandblasting , coating and other surface decorative treatment .
( 3 ) Office furniture - Rubber class
. 3.1
plastic pieces of furniture in the example application of plastic products is widespread, but also a lot of material categories : ABS, PP, PVC, PU, ​​POM, PA, PMMA, PE, PS, PC, to adapt to the different range of different materials .
ABS: Common name plastic, can be used to connect parts, seat back, seat board , which is capable of plastic plating ( water plating ) the main raw material .
PP: Polypropylene common name for the star foot , arm , foot and strength less demanding connections. Disadvantages: poor wear resistance, surface hardness low
PVC: Polyvinyl chloride common name , is mainly used for sealing parts, plug condition . It was adapted for extrusion molding , and plastic parts in PVC material is non-combustible materials, processing molding temperature stability is poor , especially poor color stability .
PU: Polyurethane common name . Mainly for the armrest ( foaming ) fittings.

POM: Common name match steel . Mainly used for wear parts such as floor mats , casters , hinges , hinge and so on. Performance wear and pressure , but poor dimensional stability.

PA: Common name nylon. Mainly used as floor mats, star claw , casters and other wear and life requires a high place . Features: wear and pressure , high intensity indoor long life, individual models such as PA66 high temperature of 2200 , the disadvantage is easy to change in the sun for performance, easily broken, poor weather .

PMMA :: plexiglass ( commonly known as acrylic ) . There are five transparent plastic material , which is one of the most transparent PMMA with acetic acid smell workpiece cutting, machining deformed easily , soaked with water can bend shaping change . Disadvantages: easy to scratch the surface , low hardness, easy to crack when bent , the price more than 20% higher than the ABS .
PC: commonly known as polycarbonate. The species is also transparent material , high surface hardness , scratch resistance, impact resistance, high strength, weather resistance ( ie not afraid of sunlight ) . Furniture partition wall solar panels is that this material is a hollow extrusion molding . Features : high cost price , compared with about 40 percent higher PMMA .

3.2 molded rubber parts
varieties mostly used rubber vulcanization process , which is characterized by : softness is good , but also for various hard and soft adjustment , the shape can be complicated , the situation can not release does not exist. Oil, acids, alkalis, abrasion resistance are good. Cons: color is more difficult rough ( especially dark to light ) hardness has some limitations , rough surface , unlike the plastic can do mirror effect. But mold , low cost, fast cycle , can be braced magnetic materials production , modification of the magnetic body , from the noise, seal. There
furniture industry uses NBR rubber , silicone and so on. Generally used to strip furniture wall insulation , foot plug, plug the vacuum chuck , 3.3 resins and other pieces of rail damping
resin product is currently a big trend, more and more for furniture, building materials , such as artificial stone material on the market , artificial tub , fire-retardant board , glass, steel and other products. Unsaturated polymer resin chemicals , liquid -based material , and formulation into a solid curing agent is mixed with the polymerization reaction heat. It differs from crushing and recycling plastics is that the work is not available . Almost cost price and PP , which the production process but also with mold -casting , but the mold is simple, available wood mold , plaster mold, rubber molds. Particularly adapted to changing shape , short , not much volume products . Fiberglass furniture products category is one of them.

( 4 ) Office furniture - Glassware
Glass products according to different production processes have flat glass, blown glass two categories. Currently, a large amount of flat glass , especially after deep processing of flat glass , more suitable for the consumer market. Blown glass and other crafts made ​​more three-dimensional modeling , classical furniture in various shapes more . Its characteristics : acid ( fluoride acid outside ) after alkali, oil , fire , steel resistant to 300 ℃. 4.1 Flat Glass Flat Glass is
silicate materials, high temperature furnace at 1300 degrees melting into liquid water flowing through the tin surface forming, commonly known as float glass . As the raw material formulation, process parameters differences, green glass , clear glass , colored glass carve three flat glass appearance . Flat glass manufacturing thinner ( less than 3mm or less ) the greater the difficulty, but too thick ( more than 15mm) is also difficult, so this market both higher cost.
Flat glass using diamond ( ie ordinary glass cutter ) , high-speed water cut after cut glass edging on all sides can be processed , such as grinding straight edge, bevel edge , round edge, duck lips , drilling , grinding the higher side of the price .
Flat glass surface can also be frosted ( chemical, mechanical two kinds ) , silk painting , painting, sculpture treatment, different surface treatment process is not the same price , roughly from highest to lowest : matte painting silk painting sculpture.

4.2
glass processing technology here focus on its processes flat glass processing methods , in addition to the previously mentioned milling processes flat glass outside , it can be bending, steel, bonding and other treatment, thereby so that the " flat " to "stereo " effect.

Bending : refers to the plate glass begins to soften at about 500 ℃, mold gently pressing need to achieve that distortion effect, inconsistent bending process in different plants and equipment , flat glass bending should be be edging or sandblasting .
Steel : refers to the glass at about 900 ℃ conduct emergency cooling treatment . Features: no sharp corners after broken glass , while the glass temperature resistance up to 300 ℃ is not broken , its strength is greatly increased by about 10 times .
Bonding : refers to the use of UV glue curing by UV irradiation , by bonding the glass can withstand more than 200kg pull, do glass glass bonding material , glass and metal , but the glue and the process is different in order to make qualified product .

These three processes to low cost price of processing methods : steel bending bonding.

4.3 art processing of flat glass glass
here focuses on the art processing methods and results, attended to by definition "art " that has some artistic effect glass processing .

Matte effect : flat glass used in mechanical scrub, scrub the actual effect is too coarse sand , easy hands marks, while the use of fluorinated chemicals , such as the use of matte that soaking syrup made ​​. The advantage is no fingerprints , coarse sand and delicate , this process can be combined to make a variety of patterns of silk surface , text

embossed effect: embossed pattern that uses a variety of molds , patterns , the use of glass to achieve bending deformation temperature, pressure made ​​by the machine . Currently many kinds of patterns can also design their own system of molded flowers, embossed glass quality real pressure is bending in one particular column .

Spray effect : spray effect there are two, one that is transparent color effects , and the other one is monochrome opaque effect. Spray the nature of glass corrosion inhibitor plus color effects , it does not change the glass surface , does not involve the nature of the glass structure .

Paint effect: namely glass surface paint treatment . In order to improve paint adhesion, should be carried out by painting the glass oven dried , so as to achieve the effect of a permanent attachment . DECORATED effect : the use of transparent film pattern printed up and pasted to the glass surface , high temperature baking, film carbonation, and patterns, text that is left on the surface
.