一种高线5.5系列和6.5系列共用孔型系统

Abstract

本实用新型涉及轧制孔型技术领域，公开了一种高线5.5系列和6.5系列共用孔型系统，包括1～28架轧机，粗轧机组具有6架粗轧轧机，孔型形状沿轧制方向依次分别为：箱形、箱形、平椭、圆、椭圆、圆；中轧机组具有8架中轧轧机，孔型形状沿轧制方向依次分别为：椭圆、圆、椭圆、圆、椭圆、圆、椭圆、圆；预精轧机组具有4架预精轧轧机，孔型形状沿轧制方向依次分别为：椭圆、圆、椭圆、圆；精轧机组具有10架精轧轧机，孔型形状沿轧制方向依次分别为：椭圆、圆、椭圆、圆、椭圆、圆、椭圆、圆、椭圆、圆。本实用新型能够减少轧机更换，减少备辊及备机数量，减少换孔型时间，降低劳动强度的同时极大地提高工作效率，节约成本。

Claims

1. A high line 5.5 series and 6.5 series common pass system, comprising 28 rolling mills, which are divided into a rough rolling mill group, a medium rolling mill group, a pre-precision rolling mill group, and a precision rolling mill group, characterized in that: The roughing mill group has 6 roughing mills, which are arranged alternately in horizontal and vertical configurations along the rolling direction. The pass shapes used along the rolling direction are, in order: box-shaped, box-shaped, flat elliptical, circular, elliptical, and circular. The intermediate mill group has 8 intermediate mills, which are arranged alternately in horizontal and vertical configurations along the rolling direction. The pass shapes used along the rolling direction are, in order: elliptical, circular, elliptical, circular, elliptical, circular, elliptical, and circular. The pre-finishing mill group has 4 pre-finishing mills, which are arranged alternately in horizontal and vertical configurations along the rolling direction. The pass shapes used along the rolling direction are, in order: elliptical, circular, elliptical, and circular. The finishing mill group has 10 finishing mills, which are modular finishing mills arranged at a top-to-bottom 45° angle. The pass shapes used along the rolling direction are, in order: elliptical, circular, elliptical, circular, elliptical, circular, elliptical, circular, elliptical, and circular.

2. A high line 5.5 series and 6.5 series common pass system according to claim 1, characterized in that: In the roughing mill, the ratio of the cross-sectional areas of every two adjacent mill passes along the rolling direction is 1.24–1.50:1; in the intermediate mill, the ratio is 1.20–1.39:1; in the pre-finishing mill, the ratio is 1.20–1.31:1; and in the finishing mill, the ratio is 1.10–1.38:

1.

3. The high-precision wire 5.5 series and 6.5 series shared die pattern system according to claim 1, characterized in that: The first roughing mill has a pass height H of 103-107 mm, a roll gap S of 29-31 mm, a pass bottom width b of 179-183 mm, a pass opening width B of 192-196 mm, a slot radius r of 13-17 mm, and a bottom radius R of 18-22 mm. The second roughing mill has a pass height H of 113–117 mm, a roll gap S of 32–37 mm, a pass bottom width b of 114–117 mm, a pass opening width B of 136–139 mm, a slot radius r of 13–17 mm, and a bottom radius R of 18–22 mm. The third roughing mill has a pass height H of 72-76 mm, a roll gap S of 22-26 mm, a pass bottom width b of 110-114 mm, a pass opening width B of 151-155 mm, a slot radius r of 10-14 mm, and a bottom circle radius R of 38-41 mm. The fourth roughing mill has a pass height H of 93–97 mm, a roll gap S of 29–33 mm, a pass width B of 90–94 mm, a pass radius R of 46–50 mm, a pass outer fillet radius r of 10–14 mm, and an expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass of 30°. The fifth roughing mill has a pass height H of 55-59 mm, a roll gap S of 19-23 mm, a pass groove width B of 117-121 mm, a groove fillet radius r of 10-14 mm, and an ellipse radius R of 105-109 mm. The pass height H of the sixth roughing mill is 68-72 mm, the roll gap S is 18-22 mm, the pass width B is 68-72 mm, the pass radius R is 34-38 mm, the outer fillet radius r is 6-10 mm, and the expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass is 30°. The pass height H of the 7th stand of the rolling mill is 41-43mm, the roll gap S is 15-17mm, the pass groove width B is 90-92mm, the groove radius r is 1-2mm, and the ellipse radius R is 84-86mm. The 8th stand of the rolling mill has a pass height H of 52-54mm, a roll gap S of 17-19mm, a pass width B of 50-52mm, a pass radius R of 26-28mm, a pass outer fillet radius r of 5-7mm, and an expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass of 30°. The 9th stand of the rolling mill has a pass height H of 30-32mm, a roll gap S of 12-14mm, a pass groove width B of 64-66mm, a groove fillet radius r of 2-3mm, and an ellipse radius R of 63-65mm. The 10th stand of the rolling mill has a pass height H of 39-41 mm, a roll gap S of 11-13 mm, a pass width B of 39-41 mm, a pass radius R of 19.5-21.0 mm, a pass outer fillet radius r of 5-7 mm, and an expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass of 30°. The 11th stand of the rolling mill has a pass height H of 23-25mm, a roll gap S of 9-11mm, a pass groove width B of 51-53mm, a groove fillet radius r of 1-2mm, and an ellipse radius R of 50-52mm. The 12th stand of the rolling mill has a pass height H of 29-31 mm, a roll gap S of 9-11 mm, a pass width B of 29.5-31.0 mm, a pass radius R of 14.5-16 mm, a pass outer fillet radius r of 3-5 mm, and an expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass of 37°. The 13th stand of the rolling mill has a pass height H of 17-19mm, a roll gap S of 8-10mm, a pass groove width B of 38-40mm, a groove fillet radius r of 1-2mm, and an ellipse radius R of 43.5-45mm. The 14th stand of the rolling mill has a pass height H of 22-24.5 mm, a roll gap S of 7-9 mm, a pass width B of 23-25 ​​mm, a pass radius R of 12-14 mm, a pass outer fillet radius r of 2-3 mm, and an expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass of 38°. The 15th pre-finishing mill has a pass height H of 16-17mm, a roll gap S of 4-5mm, a pass groove width B of 27-28mm, a groove radius r of 1-2mm, and an ellipse radius R of 19-20mm. The 16th pre-finishing mill has a pass height H of 18-19 mm, a roll gap S of 5-6 mm, a pass width B of 18-19 mm, a pass radius R of 9-10 mm, a pass outer fillet radius r of 2-3 mm, and an expansion angle θ corresponding to the tangent point of the straight sidewall slope circular pass of 30°. The 17th pre-finishing mill has a pass height H of 11-12 mm, a roll gap S of 3.5-4.5 mm, a pass groove width B of 22-23 mm, a groove fillet radius r of 2-3 mm, and an ellipse radius R of 19-20 mm. The 18th pre-finishing mill has a pass height H of 14-15 mm, a roll gap S of 4-5 mm, a pass width B of 14-15 mm, a pass radius R of 7-8 mm, and a pass outer corner radius r of 2-3 mm. The pass patterns of the finishing mills on stands 19, 20, 21, 22, 23, 24, 25, 26, 27, and 28 are adjusted according to the specifications being rolled.

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