CN2289839Y - Metal compound rack - Google Patents

Abstract

The utility model relates to a metal compound net rack used for building construction. The metal compound net rack is formed by the connection of low-carbon steel or low-alloy steel composite pipe fitting which is coated with a non-rust decorative layer outside and a composite ball. During manufacturing, the composite pipe and the composite ball are processed first and then are connected together by welding or a screw bolt according to building design requirement, and the seaming of the composite pipe and the composite ball is coated with a layer of the non-rust decorative layer. The utility model has the advantages of high intensity, corrosion resistance, high-grade decorative performance, lower manufacturing cost, and lower maintenance charge.

Description

Composite metal net frame

The utility model relates to a kind of composite metal net frame, belongs to the building net frame works.

Adopt the high-intensity metal truss structure of large span in the builing industry in a large number.Used metal truss has two kinds at present, and first kind is to be welded with carbon steel tube and carbon steel balls; Second kind is to be welded with stainless steel tube and stainless steel ball.The advantage of first kind of rack is the intensity height, cost is low, welding procedure is good, and shortcoming is that corrosion fatigue life is low, and decorative appearance is poor; The advantage of second kind of rack is the corrosion fatigue life height, and decorative appearance is good, and shortcoming is that intensity is low, cost is high, welding procedure is poor.In order to improve the corrosion resistance of first kind of rack, behind welding fabrication, adopt the paint spraying protection, but the poor durability of coating protecting, especially in the industrial atmosphere environment and the coastal area, the life-span of a paint spraying protection is well below the metal truss structure Design life-span, regular ground cleaning again not only makes cost increase with application, and the work high above the ground difficulty is very big, coating quality is difficult to guarantee, in case local corrosion generation stress occurring concentrates, just very big hidden danger under can hiding, the decorative appearance of brush coating is of low grade in addition.Adopt pure stainless steel tube and pure stainless steel ball to be welded and rack decorative appearance class height through polishing, very high corrosion fatigue life is all arranged in various environment, in use safeguard without any need for anticorrosion, can not produce hidden danger because of local corrosion, but stainless welding difficulty is big, weld strength be cannot say for sure to demonstrate,prove, stainless tensile strength is lower than carbon steel, can not make the space truss structure of large span, the scope of application is restricted, and the cost of pure stainless steel rack is very high, and the general user is difficult to bear.

The purpose of this utility model is to design a kind of have low cost, high strength, excellent corrosion resistance and ornamental composite metal net frame.

The technical scheme of this composite metal net frame mainly is to adopt the metal composite layer structure, promptly is formed by connecting by the clad pipe of mild steel that coats excellent corrosion resistance and decorative outer layer or low-alloy steel and coating excellent corrosion resistance and the mild steel of decorative outer layer or the composite balls of low-alloy steel.Coating outer field material is the composite bed of stainless steel or copper and copper alloy or aluminium and aluminium alloys or zinc and kirsite or plastics or above-mentioned different materials.The form of clad material has following several according to method for coating: 1. when plate coats method is the strip that above-mentioned material is made; 2. be the tubing that above-mentioned material is made during tiretube process; 3. during hot spray process the silk material or the powder of above-mentioned material.

The utility model has the advantages that: this composite metal net frame had both had low cost, high strength and the good welding performance of mild steel or low-alloy steel material, has the excellent corrosion resistance of stainless steel, non-ferrous metal, plastic or other material and ornamental again, machining manufacture is easy simultaneously, and use and maintenance cost is low.

Describe structure of the present utility model and processing and manufacturing process in detail below in conjunction with accompanying drawing.

Fig. 1 is a representational rack tubulose rod member and one that welds together the with it hollow sectional drawing that is connected spheroid as the rack node in the composite web shelf structure, and the remainder in the space truss structure and Fig. 1 are identical, can and the like.

Marginal data: (1)-mild steel or low-alloy steel rack carrier bar; (2)-external coating of rod member; (3)-mild steel or low-alloy steel rack node connection ball; (4)-connect the external coating of ball; (5)-mild steel or low-alloy steel weld metal; (6)-external coating of weld metal zone.

Composite metal net frame shown in Figure 1 can be realized in order to following method:

First method is: produce respectively earlier and coat outer field clad pipe and composite balls, with welding or bolted method clad pipe and composite balls are firmly linked together, weld seam or seam crossing carry out anti-corrosion treatment.

The manufacture method of clad pipe is:

At wall thickness is that the low carbon steel pipe of 1-50mm or the outer wall of low alloy steel closely intactly coat the external coating that thickness is 0.1-5mm, according to the Len req cutting, makes clad pipe after external surface finishing or polishing.The method that coats is: (1) plate coats method: according to stainless steel, non-ferrous metal or the plastics strip of being chosen the respective width size by the external diameter of steel coated carbon or low alloy steel, closely be coated on outer wall of steel pipe, under certain outer coating thrust, seam is welded, the mode of metal plate and belt welding is oxy-acetylene welding, arc welding, electric resistance welding, argon arc welding, plasma arc welding (PAW) or soldering, postwelding reconditioning weld seam and polishing; The mode that the plastic plate tape welding connects is plastic welding gun weldering or thermocompression bonding.(2) spraying process: at carbon steel or low alloy steel tube outer surface spraying layer of aluminum and aluminium alloys, zinc and kirsite or plastics through pre-treatment, the metal spraying mode is silk material or powder thermospraying, comprise oxyacetylene torch spraying, electric arc spraying or plasma spraying, processing is sealed with organic coating in the spraying back; The plastic spraying mode is spraying of powder oxy-acetylene flame or electrostatic spraying.(3) tiretube process: at the plastic pipe of the corresponding internal diameter size of outer wall of steel pipe suit.The manufacture method of composite balls is: the low carbon steel plate or the low alloy steel plate that with thickness are 1-50mm earlier strike out hemisphere, two hemispheres are welded into hollow ball, the reconditioning weld seam, coat the external coating that thickness is 0.1-5mm then, the method that coats is: (1) plate coats method: corresponding to the outside dimension that is coated mild steel or low-alloy steel hollow ball, with stainless steel, non-ferrous metal or plastic plate punching press or be hot pressed into hemisphere, two such hemispheres closely are coated on corresponding mild steel or the low-alloy steel hollow ball, under certain outer coating thrust seam is welded, it is the same with above-mentioned clad pipe that welding and external surface are handled mode.(2) spraying process: sprayed on material is the same with above-mentioned clad pipe with spraying method.

Designing requirement according to building net frame, clad pipe and composite balls that said method is made firmly link together, corrosion-resistanting decoration layer outside the external surface of weld seam or seam coats again, the method for coating is: with welding rod built-up welding, spraying, the brush plating of clad material, apply or the bonding plastics lasso with coating.Said method can use separately, also can unite use by several method.The mode of bonding plastics lasso treats that for earlier lasso being inserted in clad pipe clad pipe is connected the back and is connecting the seam crossing gluing with composite balls, and being pressed in plastic ferrule even again, seam crossing cements.Carry out removing surface or polishing after being covered to complete.

Second method is: earlier being the mild steel of 1-50mm or steel pipe that the low-alloy steel material is made and steel ball with wall thickness firmly links together in welded or bolted way according to the designing requirement of building net frame, carry out the spraying of whole external surface again, the method for sprayed on material and spraying is the same with the spraying method of above-mentioned clad pipe.

Claims (1)

1. composite metal net frame that building structure is used, it is characterized in that the pipe fitting in mild steel or low-alloy steel space truss structure, the intimate that connects ball and connecting portion thereof coat intactly that one deck is stainless to encrust, cladding material is the composite bed of stainless steel or copper and copper alloy or aluminium and aluminium alloys or zinc and kirsite or plastics or above-mentioned different materials.

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