The process of manufacturing iron staircase

Iron art is a kind of artistic production technology that synthesizes the characteristics of forging, rolling, welding, surface treatment and other processes. Most of the iron products that is security protection and anti-theft products, but also decorative landscaping art products. Therefore, in the production process, on the one hand, to reflect the beauty and artistry of the product, but also focus on the firmness and durability of the product. From the raw materials to the product process is called the process, iron production generally includes roll pressure, sample, material, forging, flower-making, riveting and welding, assembling, grinding, plating clank, spraying, painting, packaging and other processes. Specific processes are as follows:

(1) selection of standardized, soft and hard moderate mild steel. Iron art products are made of iron and steel materials, iron and steel materials, the main components of iron (Fe) and carbon (C), carbon content is less than 2%, less than 0.25% of the phosphorus content of the steel is called low carbon steel. Iron art is traditionally used to mild steel called "iron".

(2) the use of roller presses will be the surface of the metal material roll forging a variety of patterns. Roller pressing is the use of roller presses to press the surface of the metal material out of a variety of different styles of flower process, in the production of iron art is usually referred to as embossing. It is characterized by a pair of counter-rotating press clips pressurized by a linear feed movement of the metal blank, so that it produces continuous local plastic deformation and obtain the desired pattern. The cross-section shape of the processed material is round, square and rectangular.

(3) The products that need to be customized are drawn out on the worktable in a scale of one to one. Due to the artistic nature of iron products, its shape is more complex, so it is necessary to make the product on the workbench according to a ratio of one to one drawing out a large sample. Release is to make the accurate unfolding of the parts drawn on the original sheet metal process.

(4) will be rolled out of the material according to the size of the release of the product samples for cutting. Iron products, doors, windows, fences, staircases, furniture used in the frame and handrails, etc. Most of the bar (square or round cross-section) and other production; and parts such as flowers are often made of sheet metal. Bar commonly used undercutting methods are shearing, sawing, cold folding, wheel cutting, gas cutting and turning, etc.; plate undercutting methods can be divided into shearing, punching, plasma cutting and so on.

(5) The various cut materials will be handed over to the forging workshop for forging treatment. Forging is a pressure processing method to obtain metal product blanks, it is the use of impact or static pressure, through the tool or die, so that the metal billet produces plastic deformation, so as to obtain a certain shape, size and internal organization of the forgings. In the process of iron art production, usually forging production referred to as "forging".

(6) will be forged to form the material leveling, straightening, according to a ratio - put out of the large sample bent into a variety of arcs and modeling.

(7) will be bent into a variety of shapes of fittings according to the station board on the one to one large sample for which welding assembly, assembly of products for grinding and polishing.

Rivet welding is through the welding equipment will be composed of spare parts workpiece process. Welding is an important means of production process of iron products, commonly used which welding methods are: manual arc welding, m gas shielded welding, spot welding.

(8) will be sanded and polished products for hot plating casting treatment, the plating bowl after the product for the overall leveling, straightening and sanding again to remove the hanging resignation and the rough surface of the plating after polishing.

The products will be pickled to remove oil, rust, dust, debris, phosphate to produce a protective film on the surface of the product, neutralize the balance of acidity and alkalinity, put the product in the 450 "C high temperature plating and casting pool soak, so that the metal surface heat up, the resignation molecules into the metal surface layer, become part of the metal surface layer, the surface of the stainless steel plating mantle after cooling will play a role in preventing rust. Generally after the hot plating resignation treatment of the product, can guarantee the use of more than 15 years without rust.

(9) polished products for electrostatic spraying primer treatment. Electrostatic spraying is relying on the DC high-voltage electricity formed by the electrostatic field, so that the paint particles with an electric charge in the electric field force under the action of the deposition on the surface of the parts in order to form a uniform film process. Therefore, electrostatic spraying is a process that can significantly improve the quality of the coating film, so that the surface of the parts to obtain a high precision decorative coating film. Electrostatic spraying includes electrostatic spray paint and electrostatic spray powder two ways.

(10) on the color flap using manual scanning method, on the color paint many times, made of bronze, rust green, black gold and other process colors, to be completed after the color paint on the product cover varnish treatment, and then finally into the oven to bake and dry, so that the product and the paint and the water in the air, oxygen, and other rust-causing substances are isolated.