Aluminum alloypatrol boatOne of the main goals of production and manufacturing is to achieve the speed of the ship in the design scheme. In order to achieve the above overall goal, under the same hull line shape and the same main engine power, the light net weight of the empty ship means that the speed of the ship is getting faster and faster, and the fuel consumption is smaller. The hardness of aluminum alloy is only 1/3 of that of construction steel. It can really greatly alleviate the net weight of empty ships, which makes aluminum alloy especially suitable for building high-speed ships.

aluminum alloy patrol boat

Not only is the weight of boarding raw materials strictly controlled in the construction, but also the design of electric welding for aluminum alloy ships and the selection of interrupted welding as much as possible can not only control welding deformation, but also reduce the net weight of empty ships. However, because interrupted welding is not suitable for high stress or special supervision areas, we also need to pay attention to the following welding design points:

Aluminum alloypatrol boatKey points of design for welding

1. The continuous welding connection and welding on both sides of the specification standard are as follows: the middle truss material and the main keel of the tablet computer, the equipment base and the support member, the periphery of the oil-tight structure, all the structures at the steering gear, the bottom end and structure of the impact area, the strengthening material, the support, the support and top end of the cross brace material and the truss material, and the upper edge of the aircraft propeller, at least 1.5 times the diameter of the aircraft propeller, all prefabricated components, elbow plates and adjacent truss or other structural components within the area, the top end of the truss beam bearing relatively large shear stress, elbow plates and gangway ladder plates. patrol boat

2. In addition to calculating the relative height of welding holes according to the welding index of electric welding in the standard, it is also stipulated that no matter what kind of welding seam form and welding process are used, the welding hole of welding seam shall be ≥ 3mm, but it shall not exceed 1.5 times the thickness of the prefabricated components. The relative height of the weld hole for interrupted welding shall generally not exceed 7mm.

3, in the selection of interrupted welding, elbow toe end wrapping length should be not less than the height of the connecting bone, and not less than 75mm; The top of the aluminum profile, especially when the top is beveled, the length of the edge should be the height of the aluminum profile or not less than the length of the beveled, take the larger; All kinds of holes, wounds and vertical intersections of vertical connecting members shall not be less than 75mm; the duration of interrupted welding is generally not less than 15 times the thickness or 75mm to take a small point.

Todaypatrol boatMost of the hull is made of glass fiber reinforced plastic anti-corrosion or aluminum alloy raw materials.

Aluminum alloy ships are lighter in weight, 25% lighter than glass fiber reinforced plastic ships of the same style, saving more than 20% in fuel consumption, and can bear more people and objects with light net weight. patrol boat

The aluminum alloy ship has good performance, seamless and gap, tight structure, and is not afraid of minor bumps. Dents will appear after bumps, but it does not seep water, because aluminum alloy is more patient. Aluminum alloy forming production and manufacturing is simple, can improve the compressive strength through extrusion, binding and other production processes, make irregular shaped parts, can also be welded and pieced together, can be formulated well, a wide variety, can be used in different waters. Its corrosion resistance is good, more suitable than metal materials for the production of hull, the use of 20 years and more.