Pressure and temperature of steel valves

Table 1-6 Pressure and Degree of Disruption of Steel Valves ┌────────┬──────────────────────────── ───────────────────────┐
│Steel No. │Standard Judgment/°C │Working retreat, /°C │
├────────┼──────┼───┬───┬───┬──┬───┬──┬──┬───┬──┬─ ─┬──┬──┬──┤
│10,20,25 │imp │i4"Yf.│3oo │kille │400 │425 │435 │445 │455 │ │ │ │ │ │ │
│ZG200,ZG250 │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
├────────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│15CrMo │200 │320 │450 │490 │500 │510 │515 │525 │535 │545 │ │ │ │ │ │
│ZG20CrMo │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
├────────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│12Cr1 MoV │200 │320 │450 │510 │520 │530 │540 │i.1u│Allic │570 │ │ │ │ │ │
│15CrMo1 V │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
│ZG20CrMoV │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
│ZG15Cr1 Mo1 V │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
├────────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│1Cr5Mo │200 │325 │kI Ii;│430 │450 │470 │490 │500 │510 │520 │530 │540 │550 │ │
│ZG 1 Cr5 Mo │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
├────────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│1Crl8Ni9Ti │2oo │300 │400 │480 │520 │560 │590 │610 │630 │640 │660 │675 │690 │700 │
│ZG1Cr18Ni9Ti │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
│ICr18Ni12Mo2Ti │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
│ZG1Cr18Ni12Mo2Ti│ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │
├───┬────┼──────┴───┴───┴───┴──┴───┴──┴──┴───┴──┴─ ─┴──┴──┴──┤
│PN/MPa│P./MPa │zui large working pressure P-/MPa │
├───┼────┼──────┬───┬───┬───┬──┬───┬──┬──┬───┬──┬─ ─┬──┬──┬──┤
│0.1 │0.2 │0.10 │0.09 │0.08 │0.07 │0.06│0.06 │0.05│0.05│ │ │ │ │ │ │ │
├───┼────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│0.25 │0.4 │0.25 │0.22 │0.20 │0.18 │0.16│0.14 │0.12│0.11│0.10 │0.09│0.08│0.07│0.06│0.06│
├───┼────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│0.4 │0.6 │0.40 │0.36 │0.32 │0.28 │0.25│0. 22 │0.20│0.18│0.16 │0.14│0.12│0.11│0.10│0.09│
├───┼────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│0.6 │0.9 │0.60 │0.56 │0.50 │0.45 │0.40│0.36 │0.32│0.28│0.25 │0.22│0.20│0.18│0.16│0.14│
├───┼────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│1.0 │1.5 │1.0 │0.90 │0.80 │0.70 │0.64│0.56 │0.50│0.45│0.40 │0.36│0.32│0.28│0.25│0.22│
└───┼────┼──────┼───┼───┼───┼──┼───┼──┼──┼───┼──┼─ ─┼──┼──┼──┤
│2.4 │1.6 │1.4 │1.25 │1. 1 │1.0 │0.90 │0.80│0.70│0.64 │0.56│0.50│0.45│0.40│0.36│
└────┴──────┴───┴───┴───┴──┴───┴──┴──┴───┴──┴──┴── ┴──┴──┘

Note: 1. When the work retreat is the middle value of the degree of deterioration in the table, the interpolation can be used to determine the large working pressure of Zui.
2. When the main parts of the boring door are made of non-golden materials such as plastic and rubber, the mechanical properties and the limit of the failure are lower than those in the table. This table cannot be used.
3. Calculate the method for calculating the unlisted steel in the table.
P-_Product PN
In the formula, the allowable stress value of the material when the degree is t, Mpg
[The allowable stress value of the material at 200_200 °C. MPa.

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