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。

我公司生产的液压缸可在6000吨液压机。 缸的最大压力为高达1200吨。

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 hydraulic cylinder our company produces is available on 6000 t hydraulic press. The maximum pressure of cylinder is up to 1200 t.