【Daily Question】12.25: The throttle cone is made of 0Cr19Ni9 cast material (+3 wealth for replies; +3 to +8 wealth for correct answers)
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This post was last edited by lzy4225925 on 2016-1-2 at 10:56. Topic: Brief answer: Is the statement \"the throttle cone is of 0Cr19Ni9 cast structure\" in the basic design documents incorrect? What are the issues with it? Is it necessary to ask the design institute to make corrections? Requirements and hints for answering the question: Requirements: Follow the relevant national standards strictly. Hints: Is there a grade named 0Cr19Ni9? Should a new grade or a grade with the same numerical designation as S30408 be used in the basic design documents? If it is a cast structure, should “ZG” be added before the grade? Is there a corrosion-resistant casting grade named ZG0Cr19Ni9? How should it be described more accurately in the basic design documents or subsequent detailed design documents? Please note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation. Other details: Recruitment for moderators & technicians in the [Mechanical Zone] – applications and referrals are welcome. 【Valid indefinitely】【If you’re interested, come ahead!】 】(Click to enter) 【Mechanical Zone】Comprehensive guide to preventing equipment freezing over during winter 【Mechanical Zone】Call for collection of essential knowledge【Seeking manufacturer sponsors】(Ongoing campaign)【Rewards for recommending valuable content; the “Active Users and Weekly Stars” competition in the Mechanical Zone has begun】Wealth, metals, corrosion, zones, machinery
Is there a problem with the statement in the basic design documents that reads \"the throttle cone is of 0Cr19Ni9 cast structure\"? What is the issue, and is it necessary to ask the design institute to make corrections?
In accordance with the relevant national standards, it should be described more accurately in the foundation design documents or subsequent detailed design documents.
If there is a problem, mark it as cast steel ZG; weld nickel coating on the lower part
Short answer: Is the statement \"the throttle cone is made of 0Cr19Ni9 cast material\" in the basic design documents incorrect? What are the issues with it, and is it necessary to ask the design institute to make corrections? In NBT47010-2010, S30408 corresponds to 0Cr18Ni9 in the older standard JB4728-2000; it is likely that the design institute intended to indicate that the throttle cone is a forged product made of S30408. It would be advisable to send an email for confirmation.
It seems there’s no problem.....
Cast 304 is denoted by CF8.