Color steel sandwich panel roof design（五）

C28 roll forming machine
    6. Supporting sandwich panels purlins number and spacing of purlins arranged by the board of the bearing capacity and roof trusses roofing beams and other requirements of the decision, but under normal circumstances should be supported by a board of at least three purlins. In the face of the ridge line and the plate longitudinal slit oblique, oblique oblique ridge line must be set to ensure that the steel sandwich panel purlin oblique ends support conditions. Purlins and roof slope surface must be parallel to ensure inter-plate and purlin was face contact. In the long to lap the two plates, purlins flange width should be no less than 100mm, less than should set up a dual purlins, or add long pass welding angle iron. On each slope at the edge of the roof purlins rhyme and two plate length to lap purlins, should pass a long pre-fight card. 2 rivet hole spacing 300mm, avoid high altitude drilling difficult. Color steel sandwich panel roof itself is a lightweight roof envelope, purlins should be used lightweight cold-formed steel, steel for savings, reducing difficult drill drill is very beneficial, but it should be really good job in anti-corrosion treatment.
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Color steel sandwich panel roof design

    4. Roofing and gutter junction steel sandwich panel color steel sandwich panels and gutters should adopt lap sidewall coupled approach. Lap length not less than 120mm. Roof slope value should consider rainwater and construction conditions, the general color steel sandwich panel roof slope is not less than 1/20 and not more than 1/7. Less than 1/20 slow drainage, high water drainage downstream slope. It is greater than 1/7, since the plate surface more slippery, construction workers walking roofing sheet handling inconvenient and unsafe.
    5. Row plate sign size regulations, perpendicular row of boards, panels take on the slab direction sign size 1220mm, a width dimension of the actual plate is generally 1 218mm ± 2mm. Length steel sandwich panel is generally 6m. Although the color steel sandwich panel production can be any length, but does not consider the expansion factor equivalent temperature difference caused by the upper and lower surfaces of the steel sheet, plate too long, on the surfaces of the steel plate at a temperature effect causes the occurrence of bending deformation.
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Color steel sandwich panel roof design（三）

Color steel sandwich panel roof design
   2. Transverse joints between board and the board adopts sailing lap, lap method of sealing material, length not less than 120mm, the material sealed, except waterproof, there to prevent the sealing plate cutout corrosion effect.
   3. Sandwich panels connected to the purlins are generally connected through the roof, this method is simple, convenient construction, but must fight through the hole in the roof, junction being exposed to the atmosphere, often subject to wind and rain erosion and atmospheric ʱ?? In the steel sandwich panel roof design, many departments began to use the practice of hidden connections, in order to solve this problem, to create a "concave" pieces hidden connection method.
         "Concave" pieces hidden connection method is similar female connector, the female member through long or intermittently to withhold cuffs on steel sandwich panel, the female member by galvanized bolts and steel sandwich panel bottom purlins connected to the above deduction "n" shaped color waterproof accessories constitute plate. , Sandwich panels and structural connection parts, fittings and accessories, sandwich panels and steel sandwich panel between, all with aluminum rivet connections.

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Color steel sandwich panel roof design（二）

 1080 Sheet metal forming machines
  1. All seams are arranged in the longitudinal direction consistent with the roof drainage. General shall make the flow direction and the longitudinal seams cross, to avoid longitudinal joints diffuse water phenomenon. Between the roof and the roof longitudinal seam joints between the board and the board using water-based structure, waterproof material, supplemented by a method, the gap does not appear the phenomenon of water under normal circumstances only waterproof structure, but in stormy weather, in flanging buckle slot between its side walls on steel sandwich panel, since the parts processing, installation and other reasons, can not be completely consistent color and is very smooth steel surface, the friction coefficient is very small, often appear slanting rain trans overshoot. Therefore, it is necessary to be waterproof material.
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Color steel sandwich panel roof design(一）

  

  Sandwich panels used in construction, is a new development of building technology, in which there is not a previous set of load-bearing building board, insulation, waterproofing and renovation in one of the functions. Based on this characteristic, in the application of sandwich panels in buildings, we should give full play to consider these characteristics and avoid the problems posed by these characteristics. Sandwich panels used for large-span industrial buildings and public buildings roof, most of them for the plate, purlin structure, sandwich panels are now produced by Sandwich plate processing equipment.
   Roof sandwich panels do not only have to bear the weight of construction to withstand the load, snow load and negative wind loads, it must be connected to the roof purlins, load transmitted beams, columns by the purlins and the like. Therefore, the connection point to the emergence of several plates and purlins; roofing Apart from sheet metal, there are several sorts of flashing accessories. Pan of water between parts, between the pan of water and the plate, between the board and the board, between the member and the surrounding buildings flashings should be linked, which resulted in a large number of connection points. These connection points above process constitutes a key color steel sandwich panel design.

Roll forming machine 6 Ways to improve stampings life!（三）

3, reasonable forging and heat treatment in the process of stamping roll forming machine operation is more important link

    In the selection of quality parts and materials while stamping, roll forming machine and material requirements for the same material of different nature reasonable forging and heat treatment, is one of the main ways to improve the durability of stamped parts. For example, when hardened, if production overheat when heated, not only will this piece too brittle, and upon cooling prone to deformation and cracking, so durability is reduced. Therefore, in the manufacture of stamping dies, we must be reasonable grasp of the heat treatment process.
Toolox material is made from pre-hardened steel straight hardened quenched and tempered steel, heat treatment is no longer required, appropriate surface treatment (such as nitrogen) on complex, high toughness Toolox matrix material, with the upper surface of the layer of high hardness, can achieve excellent Effect.

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Roll forming machine 6 Ways to improve stampings life!（二）

2, the correct choice of roll forming machine stamping parts and materials

    Really use roll forming machine work process different materials have different stamping parts strength, toughness and wear resistance. The use of advanced materials under certain conditions can make to improve the durability of the good times. Therefore, in order to improve the durability of stamped parts must choose good material.

    Toolox series of material, is a kind of high toughness, high wear resistance, a pre-stress basically no hard new tool steel. And with a very high purity, very fine grain size, S, P content is very less carbide precipitation less content, and very uniform. Because of the special composition design, Toolox series material has a very excellent surface processing performance, which after Toolox44 nitriding surface hardness can reach HRC65 above, Toolox40 surface hardness can reach HRC62 or more, Toolox33 surface hardness can reach HRC58 or more, the depth of up to 1.8mm.

    Toolox series of material have the above characteristics, the material used in making the Toolox Series Stamping part has a special advantage.

1) thick steel plate (a typical case of punching a thickness of 35mm steel    plate), stainless steel, and nonferrous metal plate stamping mold, typical air conditioning fin die.

2) drawing dies, stainless steel drawing dies.

3) cold extrusion die cold extrusion 304 stainless steel, the thickness of 0.5mm or more, replace the DC53 and other materials, the effect is very good.

4) roll forming machines make use of high dimensional stability requirements of large stamping parts.

Roll forming machine 6 Ways to improve stampings life!（一）

    Roll forming machine stamping process is an essential process equipment, improve product quality, extend product life, improve production efficiency have a decisive role. However, since the stamping parts in the production process often lose their jobs wear size, it makes it difficult to meet production needs. Therefore, improving the durability of stamping dies (life) is critical.
Roll forming machine to improve the durability of the stamping method generally have the following:

1. An improved roll forming machine stamping parts of the design

    Whether to study a press roll forming machine part is designed to improve the durability of the foundation stamping. Therefore, when dealing with product design stamping molding adverse conditions and take effective measures to improve the durability of stampings, such as life design stamping holes often manifested in the red hole punch. For this type of stampings, it should be designed so that small punch to shorten its length to increase the strength, should also adopt the method of strengthening the guide sleeve to protect small punch. In addition, the stamping design, should be fully taken into account in the form of fixation methods and guide in the form of mold, punch, and determining and upper and lower rigid template center of pressure and other factors. Especially for stamping die, the selected clearance value has a great influence on durability. At design time, the gap should be a reasonable choice stampings, the gap value can not be too small, otherwise it will affect the life and durability of stamped parts. Practice has proved that, without affecting the quality of stamping the case, appropriate to enlarge the gap can greatly improve the durability of the stamping dies, sometimes even several times and several times increase.

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