Processing method of press forming soldering high rolling composite blank

Abstract

A technology for making the combined blank includes providing the basic metal plate and additional metal plate, cleaning their surfaces, putting two additional metal plates between two basic ones, putting solder between the basic and additional metal plates, putting the high-temp detackifier between two additional metal plates, welding sealing plates on their periphery while pressing, drilling holes, vacuumizing, heating, hot pressing and cooling.

Description

technical field [0001] The invention relates to a hot-rolled composite blank manufacturing technology for producing metal composite plates, in particular to a processing method for pressing and brazing hot-rolled composite blanks. Background technique [0002] The application of metal clad steel plates and clad coils is mainly based on the purpose of economy and resource conservation, as well as special uses on various equipment. For example, it is more reasonable to use stainless steel plates for pressure vessel plates that require corrosion resistance, but the cost is high. If the same pressure vessel plate is made of a composite plate made of ordinary carbon steel plate and stainless steel plate, the thickness of the stainless steel plate It is only 2-10% of the overall thickness, which not only satisfies the anti-corrosion performance and high enough strength of the container, but also greatly reduces the cost. In addition, some metal materials with excellent heat resis...

AI Technical Summary

Problems solved by technology

For example, it is more reasonable to use stainless steel plates for pressure vessel plates that require corrosion resistance, but the cost is high. If the same pressure vessel plate is made of a composite plate made of ordinary carbon steel plate and stainless steel plate, the thickness of the stainless steel plate Only 2-10% of the overall thickness, which not only meets the corrosion resistance and high enough strength of the container, but also greatly reduces the cost

In addition, some metal materials with excellent heat resistance, corrosion resistance and electrical and thermal conductivity, such as copper, manganese, titanium or chromium, have the problem of scarcity of resources. If double-layer or multi-layer composite boards are used, it will not only help save Resources, can also meet the special needs of many projects

The production of traditional metal composite panels is mainly made by blasting method. The disadvantages are: the joint surface between the base metal and the clad metal is physically combined, and its bonding strength is low. Therefore, the post-processing performance of the composite panel is poor and cannot be processed. Bending, folding, welding, pressing and other processing

The Chinese patent "a kind of metal composite solder" (patent No. ZL94108021.7) discloses a solder formula for metal cladding. method, so that the interlaminar shear strength of the base metal plate and the composite metal plate reaches 210MPa~350MPa; but there are many special equipment, large investment in equipment, and the inability to produce composite plates in ordinary medium-sized rolling mills. After many years of hard work, the inventor proposes Patent application for "Method of Producing Brazed Hot-Rolled Metal Clad Plate Using Composite Blank", application number: 200510033870.X Application date: April 4th, 2005. This method can be used to roll out Metal composite panels of various specifications

But the composite billet in the above method has the following deficiencies in the process of manufacture and use: (1) because there is no bonding force between the base plate and the clad plate, in order to ensure that the hot rolling does not cause delamination and cause damage to the equipment, it is necessary to The periphery of the two-layer base plate is welded, and the depth of the weld should be greater than 25mm, which requires a large amount of welding materials and labor, resulting in high production costs and long production cycles; (2) The composite billet is hot-rolled into a metal composite After the board, the trimming loss is large, and the trimming amount of each side is greater than 80mm

Images