News
How to select a correct model of permanent lifting magnet for your applications
Date:2013-5-28 17:17:22 From:ChinaPower Magnetics Read: 799Times

Select the correct model of permanent lifting magnet for your applications

The holding value of permanent lifting magnet decrease in some cases. To make sure the correct permanent lifting magnets are selected for your various applications, you first need to determine the type of ferrous material being lifted and the condition of its surface:


Formular 

Code 

Steel Stype 

Holding Value 

Formular 

Code 

Surface Finish 

Holding Value 

M1 

Low Carbon 

100% 

F1 

Ground Surface 

125% 

M2 

Moderate Carbon 

85% 

F2 

Rough Machined 

100% 

M3 

High Carbon 

75% 

F3 

Foundry Finish 

90% 

M4 

Cast Iron 

70% 

F4 

Rough Cast 

65% 

The Material's thickness, surface finish and any air gap caused by dirt, paint finish, oil, water, slag etc. are very critical factors when selecting the correct lift magnet.

The formula for calculating the lifting strength is:

T x F x M x G x Capacity


T = Thickness
F = Surface Finish
M = Material
G = Air Gap
C = Capacity

For example:

The material you want to lift is a 300kg high carbon steel with a thickness of 40mm and rough machined surface. Lets say you have decided that a CPPML300 magnet is the right model for your application. For flat steel( air gap=0mm), the rated lifting strength is 300kgs.

Apply Formula For Model CPPML300 Application

T = 40mm, G = 0mm (According to the safety capability curve of model CPPML300, you can find T=100% and G=100%), F = F2, M = M3, C = 300

Using the above table and formula, we can determine the lifting strength of the chosen model to lift your material:

100% x 100% x 75% x 100% x 300 = 225kg

With a lifting strength of 225 kgs, for this application, the formula indicates the model chosen is wrong and will not safely lift the high carbon steel weighing 300 kgs.

The correct lifting magnet for this lift application is the Model CPPML600
100% x 100% x 75% x 100% x 600 =450kgs > 300kgs

Note: This formula also applies to cylindrical materials, such as round steel, pipe, tube, bar etc. But your result needs to be reduced in value by 30%-50%.

Any help you need when selecting a correct lifting magnet for your applications, please don't hesitate to call us or send us an email, our experienced technical staffs will provide you with our professional and prompt services. Thank you.

 
Permanent Lifting Magnet | NdFeB Magnet | Magnetic Pulley | Magnetic Chuck | Magnetic Separators
Tel: +86 371 69599091 Fax: +86 371 69599092 Email: info@cpmagnetics.com
Copyright©2012 ChinaPower Magnetics Co.,Ltd All right reserved.

友情链接:5 新葡京网站 真人百家乐 网页百家乐 澳门赌博攻略 博彩网址 博彩官网 博彩公司大全 赌博游戏 赌博技巧 赌博官方网站 澳门真人赌场 赌场网址 澳门赌场玩法 新葡京游戏 澳门新葡京官网 澳门新葡京网站 威尼斯人游戏 澳门威尼斯人官网 澳门威尼斯人网站 澳门威尼斯人娱乐场 百家乐游戏 新葡京网址 澳门新葡京 新葡京免费注册 澳门新葡京免费注册 新葡京手机app下载 新葡京免费开户 澳门新葡京免费开户 澳门新葡京客户端 博彩技巧 博彩公司排名 博彩游戏 真人博彩 博彩官网 博彩公司 线上博彩 博彩现金网 博彩官方网站 澳门博彩 葡京娱乐场 澳门葡京赌场 葡京赌场 澳门葡京赌场官网 葡京国际 威尼斯人 威尼斯人免费注册 澳门威尼斯人官网 澳门威尼斯人开户 威尼斯人免费开户