肝功化验
一、轧辊介绍（Introduction roll）
■轧辊与轧辊轴承是轧机的重要部件。在轧制过程中，轧辊要与所轧金属直接接触，使金属产生属性变形。轧辊是轧机的主要变形工具。轧辊是由各类轴承支承的。
Rolls and roller bearings are important components in a rolling mill. In the rolling process, roll to metal direct contact with the rolling. Rolls cau the rolled metal to deform plastically. Various types of roller bearings supporting the rolls.
■轧辊的分类：按轧机类型可分为板轧机轧辊和型钢轧机轧辊两大类。Roll Category: By rolling mill can be divided into panels and the steel mill roll mill roll two categories
■肾复康型钢轧机轧辊是指轧辊辊身上有轧槽，根据型钢轧制工艺要求，安排孔型及尺寸。steel mill roll body roll is a rolling groove, according to steel rolling process of arranging and size of pass
1.1轧辊的组成 1.1 Composition Roll
扁担的一生■轧辊的组成由辊身、辊颈和轴头三部分组成。辊颈安装在轴承中，并通过轴承座和压下装置把轧制力传给几家。轴头和连接轴相连，传递轧制扭矩。compod of the roll body roll, roll neck and the axis of the first of three parts. Roll neck bearings mounted in bearing and pressure through the device to pass a few rolling force. Connected to the shaft head and shaft connection, passing the rolling torque.
■轴头有三种主要形式：梅花轴头、万向轴头、带键槽的或圆柱形轴头。目前常用易加工的带平台的轴头。shaft there are three main forms: Plum shaft, cardan shaft with keyway or cylindrical shaft. Easy processing of the commonly ud axis head with the platform.
1.2轧辊的尺寸参数Roll dimensions
■轧辊的基本尺寸参数包括轧辊名义直径、辊身长度、辊颈直径和辊颈长度。basic dimensions of the roll the name of parameters including roll diameter, barrel length, diameter and roll neck roll neck length.
1.2.1 轧辊名义直径和辊身长度Nominal diameter and roll barrel length
A、轧辊名义直径Nominal diameter of roll
温油■轧辊名义直径，既是轧机的主要参数，也是轧辊尺寸的主要参数。当轧辊直径确定以后，轧辊的其他参数受强度、刚度或结构上的限制也随之确定。型钢轧机的轧辊辊身是有孔型的。通常，型钢轧机以齿轮座的中心距作为轧辊名义直径，有孔型的轧辊其名义直径均大于其工作直径。为避免孔型槽切入过深，轧辊名义直径与工作直径的比值一般不大于1.4。nominal roll diameter, the main parameters of both the rolling mill, roll size is the main parameter. When the roll diameter is determined, other parameters of the roll by the strength, stiffness, or structural limits are also identified. Roll steel mill is a hole in the body. Typically, the steel mill to the center distance as the gear housing nominal roll diameter, roll a groove diameter larger than its nominal working diameter. In order to avoid too deep groove cut into the slot, the roll diameter and work on behalf of the ratio of the diameter does not exceed 1.4.
孔子思想主张
轧辊工作直径可根据最大咬入角α和轧辊的强度要求来确定。Work roll diameter bad on the maximum bite into the roll angle α and to determine the strength requirements.
B、 辊身长度Barrel length
带有孔型的轧辊辊身长度主要取决于孔型配置、轧辊的抗弯强度和刚度。因此，粗轧机轧辊的辊身较长，以便配置足够数量的孔型；而精轧机轧辊尤其是成品轧机轧辊的辊身较短，这样，可加强轧辊刚度，提高产品尺寸精确度。Roll with a hole in the body depends on the length of pass configuration, the roll of the bending strength and stiffness. Therefore, the rough mill longer barrel roll in order to configure a sufficient number of pass; and finishing mill roll mill roll products in particular the shorter barrel, so that roll stiffness can be strengthened to improve the accuracy of product size
1.2.2 轧辊辊颈直径和长度Roll neck diameter and length
■辊颈直径和长度与轧辊轴承形式及工作载荷有关。由于受轧辊轴承径向尺寸的限制，辊颈直径比辊身直径要小得多。因此辊颈与辊身过渡处，往往是轧辊强度最差的地方。只要条件允许，辊颈直径和辊颈与辊身的过渡圆角r均应选大些。一篇日记400字roll neck diameter and length of roller bearings in the form and work load related. Radial roller bearings d
ue to size restrictions, roll neck diameter is much smaller than the diameter of the barrel. Therefore, the transition barrel roll at the neck and is often the worst place to roll intensity. As long as conditions allow, roll neck and roll neck diameter of the fillet and roll the body larger r should be lected.
1.3轧辊的材料与辊面硬度墨子攻略Roll roll surface hardness of the material and
1.3.1 常用轧辊材料Ud roller material
■常用的轧辊材料有：roll materials commonly ud:
1、合金锻钢。Alloy forged steel
2、合金铸钢。alloy cast steel
3、铸铁。铸铁可分普通铸铁、合金铸铁和球墨铸铁。铸造轧辊时，采用不同的铸型，可以得到不同硬度的铸铁轧辊。因此，有半冷硬轧辊、冷硬轧辊和无限冷硬轧辊之分：武汉战疫Cast iron. Can be divided into ordinary cast iron cast iron, alloy cast iron and ductile iro
n. Casting roll, the u of a different mold, you can get different hardness cast iron roll. Therefore, it is mi-chilled rolls, chilled rolls and indefinite chill roll of the points:
1）半冷硬轧辊。轧辊表面没有明显的白口层，辊面硬度HS≥50。1) mi-chilled roll. Roll no obvious white surface layer, the roll surface hardness of HS ≥ 50.
2）冷硬轧辊。表面有明显白口层，心部为灰口层，中间为麻口层，辊面硬度HS≥60。2) chill roll. Clear white surface layer, the center is gray layer, the middle layer of hemp mouth, roll surface hardness of HS ≥ 60.
