1，主要说明

ETERNAL公司设计制造各种液压缸的覆盖

以下字段：

？ 液压机缸

？ 工程机械油缸

？ 矿山机械液压缸

？ 冶金机械油缸

？ 水利水电工程油缸

？ 船用液压缸

？ 伺服液压缸

2.设计

我们不仅可以根据从图中制造各种液压缸我们的

客户，而且我们可以根据客户的要求进行设计。 如果你

要求我们的工程师做设计，请告知我们以下说明：

1.额定压力

2.工作压力

3.测试压力

4.工作条件和环境，例如，温度，工作频率

5.拉力，并返回行程力

6.拉动和返回速度

7.大会尺寸

8.密封圈的要求。 例如，品牌，密封材料等。

9.管和活塞杆原料要求

10.活塞杆表面处理的要求，例如铬酸盐膜厚度。

表面硬度等。

11.绘画等零配件的需求。

3.制造能力和气缸尺寸范围

3.1气缸内径：最大1200毫米

3.2气缸长度：10Meter

3.3最大起重能力50吨

4，制造和检验

4.1。 缸筒的大小和选择

4.1.1根据汽缸压力和内径尺寸，不同的钢管。将选用。

1. ID≤300mm，冷轧精密无缝管会选用

2.300mm≤ID≤500mm，热轧无缝管会选用

3.500mm≤ID≤1000mm，锻造管会选用

4.1.2缸筒钢种：SAE1020，SAE1045，27SiMn，S355JR，S355J2G3

ST52-3，SUS304，SUS316L等。

内镗珩磨，粗糙度R0.2，R0.3 4.1.3缸筒。

内铬酸盐4.1.4气缸管子：如果需要的话，管内铬酸盐可以应用

.

4.2活塞杆液压缸的重要组成部分。

4.2.1活塞杆钢种：SAE1045，42CrMo4，SUS410，SUS420，SUS304，SUS316L

4.2.2活塞杆铬酸盐和表面硬度。

永恒公司确保每一件活塞杆将进行表面铬酸盐之前硬化。

表面硬度为HRC55〜60，钝化膜的厚度为0.03〜0.04毫米如果没有其他具体

要求。

4.3密封圈和O形圈

根据客户的要求和工作环境，永恒公司会选择合适的

密封环套件，密封环的品牌包括：帕克，默克尔，NOK，广州橡胶研究所，台湾品牌等。 永恒公司将提供合适的密封解决方案，为他们的客户，使液压缸有更多的

寿命，易维护和简单的维修。

4.4软管和法兰焊接

在缸筒和法兰将超声波测试，每次焊接，焊缝会

加工前清洗。 永恒公司确保每一个焊缝的一生中没有任何泄漏

4.5装配和试压

在液压缸assemblied，每一个零部件将被测量和清理。 液压后，

汽缸assemblied，压力测试将进行一个接一个，永恒公司保证测试

压力高30％，比工作压力-50％，和压力保持时间30〜60分钟是必要的。 每件液压缸必须完全通过测试，没有任何泄漏。

4.6绘画和存储。

经过液压缸通经试压，绘画是必要的。

该轧机伺服油缸我公司生产的具有良好的品质。 它是负担得起的，并已出口到荷兰等欧美国家。 它享有在国内外享有盛誉。

1. Main Description

ETERNAL company design and manufacture all kinds of hydraulic cylinders that covering

the following fields:

? hydraulic press cylinder

? construction machinery cylinder

? mining machinery hydraulic cylinder

? metallurgy machinery cylinder

? water power project cylinder

? marine hydraulic cylinder

? servo hydraulic cylinder

2. Design

Not only we could manufacture all kinds of hydraulic cylinders according to the drawing from our

customers, but also we could make a design according to customer's requirements. If you

require our engineer to make a design, pls advise us the following specification:

1. Rated pressure

2. Working pressure

3. Test pressure

4. Working condition and environment , for example , temperature , working frequency

5. Pulling force , and return stroke force

6. Pulling and return speed

7. Assembly size

8. Seal ring requirements . For example , brand , seal material etc .

9. Tube and piston rod raw material requirements

10. Piston rod surface treatment requirements, for example chromating film thickness .

Surface hardness etc .

11. Painting and other spare parts requirements .

3. Manufacturing capability and cylinder size range

3.1 Cylinder bore diameter : max ?1200mm

3.2 Cylinder length : 10Meter

3.3 Max lifting capability : 50 Tons

4. Manufacturing and inspection

4.1. Cylinder tube size and choice

4.1.1 According to the cylinder pressure and inside diameter size , different steel tube Would be choosed .

1. ID ≤300mm , cold rolled precision seamless tube would be choosed

2. 300mm≤ID ≤500mm , hot rolled seamless tube would be choosed

3. 500mm≤ID ≤1000mm, forged tube would be choosed

4.1.2 Cylinder tube steel grade : SAE1020 , SAE1045 , 27SiMn , S355JR , S355J2G3

St52-3 , SUS304 , SUS316L etc .

4.1.3 Cylinder tube inside boring and honing , roughness R0.2-R0.3.

4.1.4 Cylinder tube inside chromating : if necessary , tube inside chromating could be applied

.

4.2 Piston rod is a very important part for hydraulic cylinder .

4.2.1 Piston rod steel grade : SAE1045, 42CrMo4, SUS410 , SUS420, SUS304, SUS316L

4.2.2 Piston rod chromating and surface hardness .

Eternal company ensure that every piece piston rod would be surface hardened before chromating .

surface hardness is HRC55~60 , Chromating film thickness is 0.03~0.04mm if there is no other specific

requirements .

4.3 Seal ring and O ring

According to the customers requirements and working condition , eternal company would choose suitable

seal ring kit , seal ring brand include : Parker , Merkel , NOK , Guangzhou Rubber institute , Taiwan brand etc . Eternal company would supply suitable seal solution for their customer so that hydraulic cylinder has more

lifetime , easy maintenance and simple repairing .

4.4 Tube and flange welding

The welding on cylinder tube and flange would be Ultrasonic tested every time , the welding seam would be

cleaned before machining . Eternal company ensure that every welding seam has no any leak during lifetime

4.5 Assembly and pressure test

Before hydraulic cylinder is assemblied , every spare parts would be measured and cleaned . After hydraulic

cylinder is assemblied , pressure test would be carried out one By one , eternal company ensure that testing

pressure is higher 30%-50% than working pressure , and pressure holding time 30~60 minutes is necessary . Every piece hydraulic cylinder must be tested completely without any leak .

4.6 Painting and storage .

After hydraulic cylinder pass through pressure test , painting is necessary .

The mill servo cylinder our company produces has good quality. It is affordable and has exported to the Netherlands and other European and American countries. It enjoys high reputation at home and abroad.