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Entranc Door ,Entrance Door, iron door, wrought iron door Ir;p>Iron products have strict manufacture processes in designs, material selection and manufacture craft Desiggt;Design: in charge of our full-experiment designer­-Lion Ren, who has been in this field fofield for 15years and held th held the position of design direign director ofector of a Hong Kong company Mt;p>Mamp;gt;Material selection: we select high grade fine steel (P less than 0.035 percent,S less than 0.030an 0.030 percent)cold drawn steel which is in line with ISO9001 international standard. Each steel material is stricts strict selected with the surface neat and smooth, the separation angle should be no d be no less than 45 degrees between croseen cross rib and steel bar surface surface, the surface should not crack at the bendthe bend parts after bent 180 degrees flexural centre diameter, and steel bar surface should not crack , scar over or collapse. Forging Technologychnology: to force pressure ressure ressure ressure oessure oessure on thee on the planchet by the metal forming machinery (air forging hammer and mechanical press ) so as to maks to make it plastic deformation to achieve the certain forgeable pieces in different shape or size. Processes as below: Forgigt;Forging stock blanock blanock blanking, foking, foking, forging stock heating, roll forging for blank, blank, stamp forginp forging to certain shape, triape, trimmi, trimming cut, intermediate inspectiinspection, insion, inspection of the size and surface blemish of the forgihe forging pieces. Forging heat-treatment to remove forging stress and improve metal machinability ; sweeping is used to wipd to wipe surface oxidation; the exterior appearance and hce and hardness should be checked commonly Welding Technology: our lofting master draw the same picture as the design in 1:1 proportion with the product. Our past master jointing worker then weld the iron products roducts already bentady bent to shape all together. The product should be level, straight, smooth, and the arch should be smooth, and wh, and without twist, and the flower mould should be smooth with the joh the jointing has to be artistic and firm.nd firm. The welding line mg line mg line must be nest be nest be neat and firmand firm. Flowrm. Flower mould must be in proportion wittion with the same model number shouber should be the same and coincide completely. Any workpiece cut by plasma cutting or not easy to polish must be polished before gang welding. Accessory pieces must be forged or pold or polished before bent ie bent ie bent in shape, then e, then we then welded with ma with maiwith main iron art structure. Any burr occurred after forged must be polished before bending. The grad distance must be less than 110mm by any gate, railing railing, ailing, staircase, ircase, handrail or iron window without any declare of special demands as per saf per safety ssafety stanety standards. Sample plate must be made to be confirmed before largere large batge batch prbatch product production. The size and joi and jointing technology of iron art prn art products should be tested by quality inspector. Manufacture size and the size required by design are allowed to make a deviation of 1:1000 according to different products. Hot galvanize technology: every piece can be welded all together should be welded before hot galvanize and it is not allowed to weld after hot galvanize without any special situation. For hot galvanize products, weep hole should be opened from ed from the private private position of the tube to ensure air flow smooth for molten Zinc and acid wash. d wash. To prevent the sealing of the gate go out of shape, the sealing must be welded after hot galvanize. All products should open up an angle, the two angles welded together in stead of welding directly. The thicknesshickness of cold galvanizing layer is 5-15um, can keep the product out of rust for more than 2 years. But hot galvanize technology, the best of all in this field, iron art decoration products are put into about 455 degrees Zinc bath with Zinc rare earth alloy and billet billet aluminum, is used by our Shou Jee iron art decoration corporation. The thickness of the hot galvanize layer is above 65& 65μm, even come up to 100μm. The advantages of hot galvanize is that it has good covering power, dense galvanize layer and without any organic matter. The weather-resistant mechanism of Zinc includes mechanical protection and electrochemical protection: the surface of hot galvanize layer has ZnO, Zn(OH)2 , ZnCO3-2Zn(OH)2-H2O in atmospheric corrosion rrosion condition, which slow down the rusty of Zinc to a certain extent. This protective layer callyer callyer callyer callyer callyer called white rust can form a new layer while destroyed. Weather-reather-resistant power to base metallic iron of hot galvanize technology is much better than that of cold galvanizing, and hot galvanizing can keep the products out of rust over 50 years. Painting technology: gloss of the painting divided into: lighto: light, matte, semi-matte, light divided divided into: touches, semiflat, dead luster. The brighter the paintings are, the more ageing-resistant they are. The drying functions are divided into surface drying and hard drying with suitable moisture of 65 percent. Each kind of painting makes different drying time, to ensure the strength of adhesive force and to make it look the same as new, we new, we control the drying time ng time of following: Nitryl lacquer basic painting surface drying time is 0.2 hour, hard r, hard dry time iy time is 1 hour Bi-component epoxy primer painting surfacg surface drying time ig time is 0.5 hour, hard dry time is 24 hours Bi-component epoxy zinc rich primer painting surface drying time is 0.5 hour, hard dry time is 8 te is 8 to 10 hours Acrylic dilute acid air dry painting surface drying time is 0.5 hour, hard dry time is 4 hours Bi-componencomponent aconent acrylic finish coat surface drying time is 0.5 hour, hard dry time is 8hours &l/p> Alcohol acid gulf red finish coat surface drying time is 2 hour, hard dry time is 24 hours Red lead gulf red finish coat surface drying time is 4ime is 4 hour, hard dry time is 24 hours