What is the difference between 14Cr1MoR container plate and 14Cr1MoR (H)? Chemical composition and performance analysis of 14Cr1MoR

14Cr1MoR Vessel Plates and 14Cr1MoR(H) The difference between ？14Cr1MoR Chemical composition and performance analysis

 

14Cr1MoR Wuyang alloy structural steel . It is applicable to the pressure components of medium temperature pressure vessels of boilers and their accessories , Thickness is 3mm-200mm.14Cr1MoR Brand representation ：“14” The carbon content is less than 0.17%;“Cr” It's the ingredient that contains certain chemical elements - chromium ;“Mo” It's the ingredient that contains certain chemical elements - molybdenum ;“R” Is the first letter of the container plate . Wuyang Iron and steel sun fan

14Cr1MoR Chemical composition

C: ≤0.17;Si:0.5-0.80;Mn:0.40--0.65;Cu:≤0.30;Ni:≤0.30;Cr:1.15-1.50;Mo:0.45-0.65;P:≤0.020;S:≤0.010

14Cr1MoR Delivery status : Normalize and temper .

14Cr1MoR Executive Standards ：GB/T713—2014.

14Cr1MoR(H)：

Hydrogen 14Cr1MoR（ Hydrogen SA387Gr11CL2）、14Cr1MoR(H) Technical conditions of steel plate , This technical specification is applicable to the thickness of pressure components of medium temperature pressure vessels ≤150mm Steel plate . Reference standard ：GB 713-2008

Hydrogen 14Cr1MoR（H) The size of the 、 shape 、 Weight and allowable deviation ：

1、 Size of steel plate 、 shape 、 The weight and allowable deviation shall comply with GB/T 709 Provisions of the standard .

2、 Thickness deviation according to GB/T709 Of B Class or C Class execution , Indicate in the contract .

3、 The theoretical weight of steel plate shall be delivered , The thickness used for theoretical weight calculation is the arithmetic mean of the maximum and minimum allowable thickness of the steel plate . The density of steel is 7.85g/3

Hydrogen 14Cr1MoR（H) Smelting method ：

Electric furnace + Secondary refining 、 And through the smelting process of vacuum degassing , It can be smelted by secondary electroslag remelting . The steel plate shall be essentially fine grain killed steel .

Hydrogen 14Cr1MoR（H) Delivery status of ：

Steel plate normalized （ Allow accelerated cooling ）+ Delivered in temper .

Hydrogen 14Cr1MoR（H) Ultrasonic flaw detection ：

Carry out ultrasonic flaw detection on steel plates one by one , The flaw detection standard and qualification level are indicated in the contract .

Hydrogen 14Cr1MoR（H) The logo of ：

perform GB 713-2008 The provisions of the . Matters not covered shall be implemented GB 713-2008 Relevant provisions of the standard

14Cr1MoR、12Cr2Mo1R Steel plate is suitable for petrochemical industry 、 Nuclear power 、 Turbine block 、 Thermal power and other high temperature and high pressure 、 Large equipment connected with hydrogen or hydrogen mixed medium .

14Cr1MoR And 14Cr1MoR(H) Production process ：

Electric furnace steelmaking －LF Furnace refining －VD Vacuum degassing of furnace － Rolling plate － flaw detection － Normalize － Temper － Steel plate finishing － Performance test . The company formulates appropriate internal control components , Strictly control the fluctuation range of chemical composition , Ensure the stability of steel plate performance . Strengthen batching control and smelting operation , To control effectively Sn、Sb、As、Cu And other harmful elements , Except low P、S Content increases the purity of steel , Reduce tempering embrittlement tendency , Improve the high temperature corrosion resistance of steel . Adopt temperature control , Ensure heating time and temperature , Adopt measures such as controlled rolling , Ensure the internal quality of steel plate . Strictly control the rolling and heat treatment process , Make the steel plate obtain reasonable structure and grain size , Ensure that the steel plate has good comprehensive performance .

The main steel is Wuyang Steel, which is hydrogen resistant Cr－Mo The main types of steel ： Hydrogen for coke drum 14Cr1MoR、 Hydrogen for gasifier SA387Gr11C12、 For hydrogenation reactor 2.25Cr-1Mo The steel plate 、 Large thickness hydrogen resistant 12Cr2Mo1R（H The steel plate Hydrogen 2.25Cr-1Mo-0.25V The steel plate Corresponding to foreign brands ：SA387Gr11C12、2.25Cr-1Mo.