My wococarbide
  中 文 English
pic
Category
  • hot selling products
  • buying lead
  • selling lead
  • Library
  • Answer
Q & A details -Small gap left between railroad tracks instead of welding them together?
Your current position： Tech Community > Answer > Q & A details
0861803284

Small gap left between railroad tracks instead of welding them together?

1 answer Reward0 Remaining Time 0 Day

Small gap left between railroad tracks instead of welding them together?
Submit

Other answers

  • 0861788249

    0861788249 2017-03-02 11:11:50

    The space is left so that as the metal heats and cools during normal daily and seasonal temperature changes, they can expand or contract normally as all materials do. Welding them together would cause stress as they expand or contract away from the temperature at which they were welded at. Sooner or later, something would give - whether it be the metal, or the weld. the metals bulge out when spaces are not left and this can lead to destruction of railway lines and accidents. in short, this is due to thermal expansitivity in metals. the thermostat can be used as a clears example. it bends due to thermal expansitivity. this puts off and on the equipment being used (pressing iron, refrigerator, etc.) automatically.

    [ More ] [ Close ]
    reply
    Answer0861788249:
    Answer
More

Hot Questions

More
Scan the QR code
Tel：0086-28-82527272
Address：Room 11, No. 654, Huayuan Avenue, Xinjin, Chengdu City, Sichuan Prov. China 611433

Follow us：

Contact Us：QQ：1357683320Wechat：18408239406Email：sales-manager401@wococarbide.com

Copyright © 2016-2022 Chengdu WOCO Carbide Industry Co., Ltd. All Rights Reserved.

Wococarbide

Member login

shuriyouwu
Forgot password？

Join free

Reset Your Password

Email:

SMS code:

Send Code

New Password:

Submit