Thin wall non-corrodible steel sharp corner square, rectangular pipe and its production facility

Abstract

The invention discloses a thin wall stainless steel taper angle square or rectangular pipe and the production equipment thereof. Four angles of the thin wall stainless steel taper angle square or rectangular pipe are all taper angles and substantially identical, thus the interchangeability is good when the pipes are butted. The production equipment and process route for manufacturing the thin wall stainless steel taper angle square or rectangular pipe adopt the following steps that at least a first plain barreled roll machine frame, a second vertical edging roll machine frame, a third plain barreled roll machine frame, a fourth vertical edging roll machine frame, a fifth plain barreled roll machine frame, a sixth Turkish head machine frame, a seventh Turkish head machine frame and an eighth vertical edging roll machine frame are installed and arranged in sequence, circular hole type rollers are installed in the plain barreled roll machine frames and the vertical edging roll machine frames in front of the Turkish head machine frames, four square or rectangular hole type rollers mutually positioned with the rollers are respectively installed in the two Turkish head machine frames, and a square or rectangular hole type roller is installed in the vertical edging roll machine frame installed at the back of the Turkish head machine frames. The thin wall stainless steel square or rectangular pipe of the invention can be widely applied in fields of various construction and decoration projects.

Description

technical field [0001] The invention relates to the technical field of manufacturing thin-walled stainless steel pipes, in particular to thin-walled stainless steel sharp-angled square and rectangular pipes and production equipment thereof. Background technique [0002] At present, the four corners of the thin-walled stainless steel square and rectangular tubes 5 of various specifications and sizes on the market are all rounded, and the outer fillet radius R is generally greater than 1.1t, and t is the wall thickness of the square and rectangular tubes, as shown in Figure 1. Show. [0003] Existing production equipment for manufacturing thin-walled stainless steel square and rectangular tubes, including flat roll frame 1 and its built-in flat roll 1-1, vertical roll frame 2 and its built-in vertical roll 2-1, and Turkish head frame 3 And the 4 Turkish head rolls 3-1 and the axle sleeves 3-2 installed therein, as shown in Fig. 2, Fig. 3 and Fig. 4, these production equipment...

AI Technical Summary

Problems solved by technology

There are following deficiencies in the above-mentioned square, rectangular pipe and production equipment thereof: (1) because the flat roll, the vertical roll and the four Turkish head rolls are all positioned by their axle sleeves, it is difficult for the thin-walled stainless steel round tube to be shaped into a thin-walled For stainless steel square and rectangular tubes, the positioning accuracy is low, and the finished product size accuracy is low. The four corners of the thin-walled stainless steel square and rectangular tubes are all rounded. For square and rectangular tubes with stainless steel walls, the four rounded corners are asymmetrical, the roll gaps at the four corners are not equal, and the force states of the four corners are inconsistent. Therefore, the four rounded corners of each thin-walled stainless steel square and rectangular tube The rounded corners are also different, resulting in poor tube-to-tube interchangeability

(2) Due to the low positioning accuracy of the shaft sleeve, the production process is unstable and difficult to adjust

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