汽车螺栓等级多少？ 汽车螺栓是什么？英文双语对照

汽车螺栓等级多少？

高强度主要用在一些比如户外工程，风电或者具有能动性的机械上，抗拉强度比较大，

一般螺栓，用在一些小型机械，比如涡轮机上就可以，主要是看应用环境和运作方式

高强螺栓，使用日益广泛。常用8.8s和10.9s两个强度等级，其中10.9级居多。普通螺栓强度等级要低，一dao般为4.4级、4.8级、5.6级和8.8级。

汽车螺栓是什么？

汽车螺栓是拉住两个部件的连接杆。

汽车螺栓拧紧力矩标准？

汽车螺栓的拧紧力矩标准是指在安装或更换汽车零部件时，需要按照规定的标准力矩值用扭力扳手将螺栓拧紧，以确保汽车零部件的安全性和可靠性。这里简单介绍一下汽车螺栓拧紧力矩标准的相关内容：

力矩标准的分类：汽车螺栓的拧紧力矩标准分为两种类型：初次拧紧力矩和最终拧紧力矩。初次拧紧力矩通常为较小的数值，用于让螺栓与工件初步接触并开始紧固，在对其进行最终拧紧前达到适当的预紧力。最终拧紧力矩则用于完成螺栓的最终紧固，并保证其达到规定的预紧力。

力矩数值的测量：汽车螺栓拧紧力矩的数值需要使用扭力扳手进行测量。扭力扳手是用于控制拧紧力矩的专业工具，它能够测量出施加在螺栓上的力矩数值，并以指示器或读数器的形式显示出来，方便进行力矩的调整。

力矩标准的制定：不同型号的汽车和不同的零部件在拧紧力矩标准上都有所不同。一般来说，汽车生产厂家会根据自己的技术要求和产品特性，制定相应的拧紧力矩标准，并将其编写在汽车维修手册或技术资料中。因此，在拧紧汽车螺栓时，最好使用相关的技术手册或咨询相关专业人士，以确保正确地选择和施加适当的拧紧力矩。

汽车螺栓多少公里换？

根据汽车制造商的建议，通常建议在每行驶1.6万到2万公里时进行一次定期保养，检查并更换必要的螺栓和其他关键零部件。然而，这个时间间隔也可能会根据车型、驾驶条件和个人偏好而有所不同。因此，最好根据汽车的具体情况来判断螺栓何时需要更换。

汽车螺栓上写8什么意思？

代表着螺栓的性能等级，也代表着它的工作环境。螺栓性能等级的含义是国际通用的标准，相同性能等级的螺栓，不管其材料和产地的区别，其性能是相同的。螺栓性能等级分3.6、4.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9等10余个等级，等级越高，强度越高。8.8级及以上的螺栓统称为高强度螺栓，材质为经过热处理（淬火 回火）的低碳合金钢或中碳钢，8.8级以下的螺栓为普通螺栓。强度等级是指螺栓的抗剪切应力等级，如8.8级螺栓的抗剪切应力等级为8.8Gpa。

螺栓性能等级标号分别表示螺栓的公称抗拉强度值和屈强比值，还有公称屈服强度。说到这肯定会有小伙伴不明白什么是公称抗拉强度值，还有屈强比值啊，书读的少不要骗我。用人话说公称抗拉强度值就是我要掰断螺栓需要多大的力，屈强比值就是能让螺栓开始俯首称臣的力和能掰断螺栓的力的比值。用你掰断螺栓的力和屈强比值的乘积就是公称屈服强度。

40钢和45钢哪个适合做汽车螺栓？

40钢适合做汽车螺栓:由于40Cr为合金钢，可以做10.9级的高强度螺栓，一般10.9级以上就用42CrMo了。只有合金钢才适合做高强度螺栓的原因是：材料中加入微量元素是为了提高热处理性能，从而提高螺栓的强度和韧性。

而45#钢，属于碳素钢，里面没有合金成分，一般用于做8.8级以下的螺栓。如果强制用来做高强度螺栓的话，其强度和韧性达不到标准要求，切提高热处理温度还会形成脱碳，对螺纹损伤太大。故不适合做汽车螺栓。

汽车螺栓紧固后是用什么点的油漆标记？

“新车出厂的时候，螺栓紧固后点上标记，”目的有两：1.防止工人漏紧螺栓。2.便于使用中及时发现螺栓是否松动。

记号一般用油漆（红的）点在螺栓与螺母的接触处。

记号也可用笔 ----- 习惯上叫----金属记号笔 ---- 各地大的文化用品商店有售。2.5---5元一支。

汽车螺栓M12*1.25分别表示什么意思？

汽车螺栓M12*1.25中的M12表示螺栓大小是12mm,1.25表示螺栓螺距是1.25mm。最好自己查相关资料，网上得来总是假，碰到不懂装懂的，随便应答的，根本就是假的或骗人的就直接误导你，甚至害惨你。

汽车螺栓螺母画法中d和D代表什么，一般值是多少？

d和D都代表直径，有大小两个字母的，一般D代表尺寸大点的外径，d代表尺寸小的直径或内径。一般螺丝最小的是3mm吧，大的有20mm吧，螺母外经大的要36左右，所以一般值在3~36左右。

怎么拧紧汽车连杆螺栓？

装配时应用扭力扳手将连杆螺栓交替分次(一般分3—4次)逐步均匀拧至规定钮矩。若拧紧钮矩不足，工作中连杆结合面产生缝隙，螺栓受冲击力时易被拉断或剪断；拧得过紧，螺栓伸长变形，强度降低，受力后易折断损坏。各种机型发动机的连杆螺栓规定扭矩不尽相同，在缺乏技术资料的情况下，可根据螺栓直径估算其安全权矩范围，如MU连杆螺栓，其安全扭矩为60—80Nm；M12螺栓，其扭矩为80—100Nm；M14螺栓，其扭矩为100—120Nmo。

Car bolt grade how many?

High strenth basically is used in a few for instance outdoors project, wind report perhaps has the machinery of dynamic role to go up, tensile strength is greater,

General bolt, use in a few small-sized machinery, for instance on turbine OK, basically be to see application environment and run way

Excel in bolt, use increasingly extensive. Commonly used 8.8s and 10.9s two intensity grade, among them 10.9 class are in the majority. Grade of common bolt intensity wants low, it is like one Dao 4.4 class, 4.8 class, 5.6 class and 8.8 class.

What is car bolt?

Car bolt is the join lever that plays two parts.

Does car bolt screw pitching moment standard?

Of car bolt screw pitching moment standard is to point to be being installed or change when car component, need uses torsional spanner to screw bolt according to value of standard moment of force, in order to ensure the security of car component and dependability. Here introduces car bolt simply to screw the photograph inside Shanghaiguan of pitching moment standard allows:

The classification of pitching moment standard: Of car bolt screw cent of pitching moment standard is two kinds of types: The first time screw pitching moment is mixed screw finally pitching moment. The first time screw pitching moment is lesser numerical value normally, use at making bolt and workpiece preliminary contact to begin to tighten solid, achieve before undertaking screwing finally to its proper tighten force beforehand. What screw pitching moment is used at finishing bolt finally is final close solid, assure what its obtain a provision to tighten force beforehand.

The measurement of pitching moment numerical value: Car bolt screws the numerical value of pitching moment needs to use torsional spanner to undertake metrical. Torsional spanner is to be used at control to screw the professional tool of pitching moment, it can measure a pitching moment numerical value that brings to bear on to go up in bolt, and with indicator or reading implement the form is shown come, convenient the adjustment that has moment of force.

Of pitching moment standard make: The car of different type and different component are in screw differ somewhat on pitching moment standard. Generally speaking, the car produces manufacturer to be able to ask to mix according to his technology item characteristics, make phasing answer screw pitching moment standard, write its in manual of vehicle maintenance and repair or technical data. Accordingly, in screw when car bolt, had better use relevant technology manual or seek advice from relevant and professional personage, bring to bear on in order to ensure correctly choice is mixed to screw appropriately pitching moment.

How many kilometer changes car bolt?

According to the proposal of car manufacturer, normally the proposal is in every travel 16 thousand to undertake maintaining regularly when 20 thousand kilometer, check and change necessary bolt and other and crucial component. However, this time-interval also may according to the model, drive condition and individual preference and differ somewhat. Accordingly, had better judge bolt when to need to change according to the particular case of the car.

8 what meaning to write on car bolt?

Representing the property social estate of bolt, also representing its working environment. The meaning of bolt property social estate is the level with current international, the bolt of same function social estate, no matter its material is mixed the distinction of producing area, its function is identical. Bolt property social estate is divided 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 wait for more than 10 grade, order and degree is higher, intensity is higher. The bolt a general designation of 8.8 class and above is high strenth bolt, material is course heat treatment character (quench temper) low carbon alloy steel or medium carbon steel, the bolt under 8.8 class is common bolt. Intensity grade is point to bolt fight cut stress grade, those who be like 8.8 class bolt fight cut stress grade to be 8.8Gpa.

Grade of bolt property social estate parts to the nominal tensile strength that shows bolt is worth and bend strong specific value, still nominal succumbs intensity. This affirmation can have respecting small companionate and unidentified white what is value of nominal tensile strength, still have Qu Jiang specific value, what the book reads is little do not cheat me. Word of choose and employ persons says nominal tensile strength is worth even if I should break bolt to need how old power, bending strong specific value is the ratio of the force that can allow bolt to begin bow one's head weigh me and the power that can break bolt. The power that breaks bolt with you and the product that bend strong specific value are nominal succumbs intensity.

40 steel and 45 steel which suit to make car bolt?

Do 40 steel suit to do car bolt: ? ?0Cr of take along sth to sb is alloy steel, can make the high strenth bolt of 10.9 class, general 10.9 class above uses 42CrMo. The reason that only alloy steel just suits to make high strenth bolt is: Microelement is being joined in material is to improve heat treatment performance, raise the intensity of bolt and tenacity thereby.

And 45# steel, belong to carbon steel, there is alloy composition inside, use at making the bolt under 8.8 class commonly. If use the word that becomes high strenth bolt compulsively, its intensity and standard of tenacity short of ask, cut raise heat treatment temperature to still can form decarbonization, too big to whorl injury. Reason does not suit to make car bolt.

The paint number that with what orders be after car bolt originallies closely?

"When new car leaves factory, bolt tightens the mark on the dot after solid, " the purpose has 2: 1. Prevent worker leakage to tighten bolt. 2. Facilitate in using discover whether bolt becomes loose in time.

Earmark uses paint commonly (red) the dot is in in the contact of bolt and nut.

Earmark also can use a pen-----Customarily cries----Metallic sign pen----The culture things store with large each district has carry out. 2.5---5 yuan.

What meaning does car bolt M12*1.25 express respectively?

The M12 in car bolt M12*1.25 states bolt size is 12mm, 1.25 expressing bolt pitch is 1.25mm. Best oneself examine relevant data, must coming on the net always is false, come up against do not understand outfit those who understand, informal and respondent, be a holiday at all or the direct misdirect that deceive people you, kill even miserable you.

What do the D in brushwork of car bolt nut and D represent, how much is average cost?

D and D represent a diameter, have volume two abecedarian, general D represents external diameter of bits size is large, d represents the diameter with small size or internal diameter. General screw is the smallest is 3mm, have 20mm greatly, the classics outside nut wants greatly 36 the left and right sides, so average cost is controlled in 3~36.

How to screw bolt of car connecting rod?

Torsional spanner applies to divide connecting rod bolt alternately when assembling second (general component 3, 4) twist equably stage by stage to formulary button quadrature. If screw button quadrature is not worth, the connecting rod in the job combines a face to produce gap, when bolt suffers wallop be pulled easily or clipping; Twist too closely, bolt is stretchy be out of shape, intensity is reduced, the Yi She after getting power breaks attaint. The connecting rod bolt of all sorts of type engine stipulates torque is endless and identical, below the circumstance that lacks technical data, but according to bolt diameter estimation its bring range of full-fledged member quadrature, be like bolt of MU connecting rod, its safety torque is 60, 80Nm; M12 bolt, its torque is 80, 100Nm; M14 bolt, its torque is 100, 120Nmo.