Simple Guide For Understanding The Different Types Of Garage Door Springs And The Purpose Of Each
At Tianjin Wangxia Spring it’s our goal to help you provide the best service and value to your customers. That is why we have put together this simple guide for understanding the different types of garage door springs and the purpose of each. In this guide we will look at 3 types of spring wire: oil tempered, stoving Varnish(black spring), galvanized .
OIL TEMPERED SPRINGS
Oil tempered wire is the most popular wire and has been used for decades to manufacture torsion and extension garage door springs. Oil tempered wire uses a high carbon steel rod that goes through a special heat treatment process to give it the ideal properties for garage door springs. There are two types of oil tempered wire: Class 1 and Class 2. The garage door industry uses Class 2 which has a higher tinsel range. A tinsel range is the strength for each wire size (diameter) which follows the ATSM standards due to the oil coating on the springs, this type of spring installation can get messy and that is why you will see many installers opt for a coated finish.
Stoving Varnish(black spring
Stoving Varnish springs go through a similar process it’s better than oil tempered springs, with one more steps . They are pulled through progressive dyes until they reach the desired diameter.
GALVANIZED SPRINGS
Galvanized springs were introduced to the garage door industry in the mid-1980s. Galvanized springs go through a process where a zinc coating is applied to the surface. They are manufactured from hard-drawn wire. Due to the zinc coating on the springs, they are a better choice when in corrosive environments.
Difference between black or silver garage door torsion spring?
Many people ask us why we use the “dirty & black springs” with our door installs and service repairs. The answer is simple. Oil tempered springs (black ones) outperform the galvanized ones (silver ones) you may be seeing out there today. Galvanized springs were very popular about 10 years ago and started to become more frequently used than oil tempered. Since that time a few things have changed. Oil tempered springs are now painted most of the time which eliminates the dirtiness of them and makes them more presentable. The biggest reason to use them is for better performance. When springs are wound up they will “relax” after so many cycles up and down which causes a reduction in its lifting power.
Oil tempered springs will relax about 3-5% which is manageable.
Galvanized springs, in contrast, relax 7-10%.
This dramatic change as the springs “relax” may cause the doors not to run as well and may even be not enough tension to keep the door from falling down. If galvanized springs relax too much we have to add turns to the springs and it can take away from the life of the spring. This creates recall for us and a bad running door for you.
Post time: Aug-24-2022