magasin moncler Reduce the amount of mandrel diame

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Reduce the amount of mandrel diameter of

Three t ① known outside the die bore diameter increases due to radial pressure leaving aftereffect l @ rebound increase in diameter, ③ deformation of metal due to deformation of inertia Deformation of Road, Stubbs Road, recent comparative non-even amount of times to reduce the impact of small diameter. 5 stacked touch narrow angle on the amount of child Ⅲ Can one be a ~ 42.1 × 3.44mm of steel cut into four sections, the intermediate process after 6 with the die angle, respectively., 12., 18., 24.'s cone model space to pull out, and measure the outside diameter of die set and steel with an average diameter of the average diameter, the measurement results are shown in Table 6, the die angle and narrow diameter volume is shown in Figure 6. ■ ■ ■ small amount of I constant outside the text of a 6-hsiang Chao Ting Zhi Zhan brass pull with straight light dinner apartment No. △ D diameter d ■ International diameter D volume (Yu) (mm ) (ram) (mm) (ram) 1635.7S35.556.O0.2021235.9635.116.00.I531835.823.55.01.Z7l2435.9033.946.01.96 Note 'tubing size 42. 1x3.44. Children ÷ 36x3.5mm angle in Figure 6, the relationship between volume and diameter narrowing in Table 6 and Figure 6 shows the die angle increases medullary diameter increased significantly reduce the volume. In reducing the amount of the same, the mode angle the greater the shorter the deformation zone (Figure 7), the deformation of unit length and diameter of the greater compression ratio, the more intense metal deformation, flow rate and deformation more difficult in the sharp turn, Above experimental results show that the amount of die angle on the impact of reduced diameter compared with reducing the amount of cold hardening steel and large. P-type often used in actual production tooling and Chinese cross a dial tube. P-type outer mold of the die angle of mouth is 12 ~ 13. , Chinese foreign mode angle in 3 to 5. . While the sauce than Chinese-style angle in the mode angle, but the general style for drawing die and mandrel with the blooming of drawing, and Chinese for the finished draft to pull the wrong pipe. Pull the room First Draft of steel garden set the basic model,[link widoczny dla zalogowanych], but the second is the entrance angle is small, so the module Draft wrong angle on the diameter of a small amount of very small, even negligible. Circle 7 open space system by e bud deformation zone cliffs and strong, the amount of the impact of a drawn stem Mino Mino suddenly snapped up by the productivity rate of extubation machine has a walking shadow (continued on 36 dodger) B t Figure J5 rolling force,[link widoczny dla zalogowanych], Calculation of core rod tension compared with the measured value. * A P |. x-Ql0. C The figure shows, when the rolling force is small, the two are almost equal (the distribution along the line in the equivalent), when the system power consumption is large, the real value of protactinium I clip the theoretical value. l991 6 Conclusion No. 5 above the analytical method obtained by sizing the unit roll by rolling pressure wall region, the total rolling force and the mandrel axial force relationship. Theoretical result is consistent with the measured results. The results also show that the process of forming a tube in the elongation and the total force is linear calibration, which shows not only the elongation is a measure of the quality of a tube shape parameters (foreign), sizing the control force is also an indicator of the quality of molding, and is a more direct indicator. This provides quality control to find a tube forming a new self-l 【way, but also for forming quality of the line control provides a simple and practical mathematical model. (Continued from page 25) m / rain (adjustable speed), foreign extubation pulling machine speed has reached lOOm / rain mouth, usually,[link widoczny dla zalogowanych], the higher the friction of drawing speed, twin-shaped area of gold employed in embroidery in the axial shift exceeding too, compiled a small amount of air strike camp the greater the diameter of ships. However, we can speed pulling machine 3OokN Experimental studies have shown that, drawing. Reduced rate on the amount of mandrel diameter have little effect, shown in Figure 8. But this situation jJ: mqi left Bodhisattva I ∞ Achillea 6 degrees 8. Pulling speed and the diameter reduced the amount of paste correlation diagram (Received 1001-03--10) may slow the sake of drawing. So that, low-speed pull pull system for the spot size on the amount of air had little effect. Conclusion 7.1 T reduced the diameter of mandrel diameter increased with the amount of the increase of entropy increase in days. . = 7.2 Non-pull pass even than the diameter of the narrow pass with a big pull. 7.3 Building the greater angle,[link widoczny dla zalogowanych], diameter, especially in the more narrow the amount. 7.4 of drawing speed is low,[link widoczny dla zalogowanych], investment and reduce the amount desired by the speed had little effect on the diameter. 'References [1] Cai-helmet. Lian Yu Zhai Mingjiao actinium pipe production tube. Chongqing University, Chongqing, a Press, 1988, I12 [2] Zhang was helmet and so on. Corner buildings Liu Song of mandrel geometry. Steel, 19B9 ● 4 (Received ll991 a o5-27)

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