Last Updated on November 16, 2022 by188bet博金宝官方网站
通过了解温度对紧固件的影响，避免在现场造成任何昂贵的惊喜。
使用紧固件的环境温度会严重影响其性能。尽管这不仅限于极端，还包括周围温度的变化，但高温和冷冻寒冷设置最有可能引起问题。
Whether you are using screws, rivets, nuts and bolts, or anchors, choosingfasteners that adapt well to applications of varying temperatures可能很关键。
It's Gettin' Hot in Herre*
It goes without saying that plastic fastenersrisk meltingwhen暴露于高温。但是，除非金属达到异常高的温度，否则不会。那必须使它们在高热应用中安全，对吗？
错误的！
Metal is prone to these issues with prolonged exposure to heat:
蠕变is slow deformation from constant mechanical stress that commonly occurs in extreme temperatures.
Stress relaxation是一种热机械现象，其中弹性应变缓慢转化为塑性应变，即使在应力水平远低于屈服强度下
Corrosion is a result of oxidation from heat
热膨胀可以打开固定孔，当紧固件再次冷却时，它会松动。
| Temperature | 用于高热应用的材料 |
|---|---|
| Up to 450° F | Low steel or medium carbon alloys |
| 在450°F和900°F之间 | 不锈钢 |
| Between 900° F and 1200° F | 强大合金包括INCO 718和A-286 |
| 超过1600°F | Nickel-cobalt alloys |
Baby It's Cold Outside**
在零下条件下，金属材料可能显示出这些不利影响：
Loss of ductility. In other words, less ability to undergo plastic deformation before fracturing. Metals become brittle in very low temperatures.
抵抗力减少撞击
Increased sensitivity to shock loading.
Oddly enough, the yield strength and mechanical tensile strength of some metals increase as temperatures drop!
| Temperature | 在冷设置中使用的材料 |
|---|---|
| 降至-100°F | 镍富合金 |
| 在-100°F和-300°F之间 | 不锈钢 |
| 低于-300°F | Non-metallic materials |
** Thanks to Idina Menzel
在必须考虑温度对紧固件的影响的情况下，118bet网娱乐 188bet博金宝官方网站用于高质量的产品。
