Technology for reducing allowance cutting during ship building

Abstract

The invention relates to a technology for reducing allowance cutting during ship building. In the technology, a hull is firstly divided into a plurality of general sections for building; and the general sections are gathered up. The invention is characterized in that in the step of lofting and baiting of parts, section allowance, slipway allowance, compensation dosage and material cutting are additionally and respectively placed once on a deck, a strake, a longitudinal bone, a rib, an enforced bone, a wall plate and other structures of each typical node according to section splicing or section butt joint and other different forms; in the step of the whole building of the general sections, when the joint of one of two general sections is provided with a transversal bulkhead, the two general sections adopt a splicing form, and the general section without the transversal bulkhead is inserted with the general section with the transversal bulkhead for carrying out sintered ceramsite liner welding; and when the joint of the two general sections are not provided with the transversal bulkhead, the two general sections adopt a sintered ceramsite liner welding butt joint form. The invention can determine the size of parts once, and improve the precision of parts manufacturing, thereby avoiding on-site secondary cutting quantity, and providing guarantee for general section construction; and the procedures are shifted forward, thus reducing slipway working capacity and waste backflow volume, shortening building ship period and reducing building ship cost.

Description

technical field [0001] The invention relates to the fields of ship building and steel structure building, in particular to a process for reducing margin cutting in ship building. Background technique [0002] Usually, in shipbuilding, cutting allowances are left for multiple general sections when subdividing, such as: the outer plates of the stern general section, multiple middle part general sections and bow general sections have berway cutting allowances; superstructure Compensation amount is reserved for the lower port of the outer plate and wall plate, but there is no allowance or compensation amount for all structures and connection types, which will cause the actual allowance at the joint to be insufficient and incomplete. In the hull structure, the connection between plate and plate, plate and structure, and structure and structure is complex, and there are many related dimensions; there are many variable factors such as welding shrinkage, blanking error, installation...

AI Technical Summary

Problems solved by technology

[0002] Usually in ship construction, the many total section with cutting allowance ， For example: the outer plate of the stern general section, several intermediate sections and the bow general section has a berth cutting allowance; the outer plate of the superstructure and the lower port of the wall plate have a compensation amount, but all structures and connection types have not left. The margin or compensation amount will cause the actual margin at the joint to be insufficient and incomplete

In the hull structure, the connection between plate and plate, plate and structure, and structure and structure is complex, and there are many related dimensions; there are many variable factors such as welding shrinkage, blanking error, installation error, and temperature difference expansion and contraction, which can easily cause gap imbalance. Not in place, easy to deform, section height, length, and width cannot meet the design requirements; but with the improvement of shipbuilding precision and efficiency requirements, extensive design and construction methods can no longer meet the needs of production

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