Process innovation of calcium carbide barrel flange
Hengzhou Machinery Experimental Factory Fan Zhongjin
The inner-loading calcium carbide barrel produced by our factory has a flange ring, and its size requirement is shown in Figure 1.
figure 1
The original process for manufacturing this flange is to heat the 40X4 mm flat iron and place it on a special curved flange machine to form a shape as shown in Figure 2. Then, cut the material head and the electric welding head according to the figure, and then drill the tapping to make a flange ring. This process has many shortcomings. The heat 1 has ripples and wrinkles, and the quality is poor. 2 consumption of materials, labor, energy is larger. The two heads of a flange are 300 mm long, which is both a material head and a collet. It cannot be saved. Each actual consumption is 1.5 kg, and the parts themselves weigh only 1 kg. 8 production efficiency is low, not available for production needs.
figure 2
In response to these shortcomings, we have revolutionized the flange manufacturing process and conducted many tests, which have achieved satisfactory results.
The innovative process is:
(1) Bending into a ring as shown in Figure 3;
image 3
(2) the whole circle,
(3) electric welding head;
(4) Formed on a 20-ton press and turned into nearly 45. As shown in Figure 4.
Figure 4
(5) Annealing the stamped deformed flange to eliminate work hardening, we heat-anneal the joint with gas welding.
(6) The second stamping and flattening can be used. The advantages of the post-innovation process are: 1 high productivity, up to 4 times higher than the original process. 2 each saves 0.25 kg of steel. 8 Saving energy (coal, oxygen and acetylene) about one-third.
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