竞彩足球预测网一定牛

Set Home | Add to Favorites | Contact Us
Consulting hotline: (0371) 22622696
contact us
Sales Manager: 0371-22622696
Mobile: 13937852513
Sales manager Huo: 0371-22866538
Mobile: 13393827066
Sales Manager: 0371-22866535
Mobile: 13393827066
Shipping inquiry: 15537884118
Fax: 0371-22866553
Postcode: 475002
Email: 7057996@qq.com
MSN: kfrj@kfccj.com
Address: No. 187, South Section of Kailiu Road, Kaifeng City
product description

Technical analysis of INA thin-walled bearing parts in the production process

[Author: Jiang Rui Bearing] [Date: 2017-04-13] [heat: ]

If the INA bearing is in a superior continuous rotation form, it will announce a low whine sound and knock on the scar, and noise will also occur. This noise will follow the unevenness of the speed of the thin-wall bearing.
If there is intermittent noise, it is transparent. If sharp hissing, squeaking and other irregular sounds are announced, it is often revealed that the bearing is in a bad continuous rotation condition.
For heavy loads, a grease with a small penetration should be selected. When working under high pressure, in addition to a small penetration, it must also have high oil film strength and extreme pressure performance. When selecting grease according to environmental conditions, calcium-based grease is not easily soluble in water and is suitable for dry and low-moisture environments. INA bearings commonly used greases are calcium-based grease sodium-based grease calcium-sodium-based grease lithium-based grease aluminum-based grease and molybdenum disulfide grease. The amount of grease filled in the bearing is appropriate to fill 1 / 2-1 / 3 of the internal space of the bearing. Should be reduced to 1/3 at high speed, too much grease will increase the temperature rise.
The temperature of the bearing can generally be estimated by the temperature outside the bearing. If the temperature of the outer ring of the thin-walled bearing can be directly measured using the oil hole, it is more appropriate. Generally, the temperature of INA bearings gradually rises with the beginning of bearing operation, and reaches a steady state after 1-2 hours. The normal temperature of the bearing varies with the machine's heat capacity, heat dissipation, speed and load. If the lubrication and installation parts are suitable, the bearing temperature will rise sharply and abnormally high temperatures will occur. At this time, the operation must be stopped and necessary precautions must be taken.
Bearings are a kind of precise mechanical support components. INA bearing users deeply hope that the bearings mounted on the mainframe will not be damaged and maintain their dynamic performance during the predetermined service period, but the objective facts are sometimes not satisfactory, and sudden bearing failure Accidents can cause significant losses to users. A large number of bearing failure analysis studies have shown that short bearing life or premature loss of accuracy are caused by material defects or improper manufacturing, but to a large extent due to failure to install and maintain bearings in strict accordance with bearing use requirements, or It is the abnormal damage of the bearing caused by improper bearing selection or the actual load exceeding the rated load of the thin-walled bearing itself.
The cracking and spalling of the bearing is caused by the INA bearing under the action of cyclic load, and the contact surface is prone to fatigue damage. Therefore, in order to improve the service life of the bearing, the bearing steel must have high contact fatigue strength.
Hardness is one of the important qualities of bearing quality, which has a direct impact on contact fatigue strength, wear resistance and elastic limit. The hardness of the thin-walled bearing steel in the use state generally needs to reach HRC61 ~ 65, so that the bearing can obtain higher contact fatigue strength and wear resistance.
The cage is made of nylon 46, which reduces the sliding friction between the ball and the cage. In addition, the uneven shape in the rotation direction is eliminated, thereby reducing the stirring loss. In addition, by adopting a shape that can reduce stress during assembly, assembly performance is ensured. The loss of torque on a single cage is reduced by 30 to 40%, and the loss of torque of the thin-walled bearing as a whole is reduced by 50 to 65%. The company speculated that Prius increased the fuel efficiency of 10 and 15 modes from the previous 35.5km / L to 38.0km / L, and about 1-2% of the improved fuel efficiency was obtained through the use of such bearings.
In the production process of INA bearing parts, there are many cold and hot processing procedures. In order to meet the requirements of high volume, high efficiency and high quality, thin-walled bearing steel should have good processing performance. For example, cold and hot forming properties, cutting performance, hardenability, etc.

Keywords:
Previous post: Smelting of bearing steel
体球网足球即时比分手机版下载 目前电竞竞彩最好的app 抢庄牌九安全平台 火山分彩最高赔率平台注册 对战抢庄牛牛怎么玩 龙虎和平台总代理 澳洲幸运5微信群怎么找出来的 极速赛车龙虎怎样加盟 11选5玩法规则 腾讯分分彩龙虎和哪个平台比较靠谱