How to use a knife when the bow is bent?

After annealing, hot working, forging, shaping and machining details, the surface of the blade and the place needing fine shaping are roughly ground and polished, then heat treated, normalized, heated to about 800℃ 10 minute, taken out for air cooling, then quenched, heated to 850℃ for a few minutes, taken out for oil cooling, without water quenching, and the spring steel after water quenching is fragile and easy to crack. Am I a little complicated?

Anesthesiologist in plastic surgery clinic

The name of beauty salon, corporate culture, corporate soul and corporate slogan should be integrated, that is, the name of the store should be related to the latter three. Thank you 15

How many times does freezing point depilation take?

Is there anything delicious in Yingkou Old Street Night Market?

What is the proportion of Meituan hotels?

How many days will it take to fill out the decree pattern? A week later, it completely returned to nature.

Is it true that nearsighted people can't presbyopia when they are old?

Where can I open an account in Nanjing Jianye?

What does int mean in programming?

What is the effect of deformation of automobile girder?