The production of hydrogen 15CrMoR steel

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Hydrogen 15CrMoR (H) containing WYJ testing, heat treatment, is more than or equal to -10 DEG C impact work, all the fixed ruler, all properties, electro slag, big ingot      

Hydrogen 15CrMoR, 15CrMoR (H) technical conditions of steel plate production

1 the use of range from Wuyang steel quality management department

The technical conditions applicable to the medium temperature pressure vesselpressure components with less than 150mm thickness of the steel plate.

2 normative references GB713-2008

In 3 dimensions, shape, weight and permissible deviations

3.1 steel plate size, shape and tolerances shall comply with the provisions of GB/T709. 3.2 thickness deviation according to B class or the C GB/T709 class in the contract execution, Naka A.

3.3 plate theoretical weight delivery, theoretical weight the maximum thickness ofsteel plate thickness is permitted and the minimum thickness of the arithmetic mean value. The density of steel 7.85g/ cm 3

The chemical composition of steel requirements, shall be in accordance with the provisions of table 1. Table 1 chemical composition of Wt% components

C Si Mn P  Analysis of the S Max Cr Mo melting

0.12~ ~ ~ ~ ~ ~ 0.18 0.15 0.40 0.40 0.70 0.010   0.010

Analysis of 0.8 ~ 1.2 0.45 ~ 0.60 of the finished product

0.10~ ~ 0.20    0.13 ~ ~ 0.43    0.37 ~ ~ 0.73   0.012   0.010    0.75 ~ ~ 1.25    0.43 ~ ~ 0.62

Analysis of Ni Cu Sb* Sn* component of As* Max [H]* melting

Analysis of 0.20 and 0.20 is less than or equal to 0.003 is less than or equal to 0.015 and 0.016 2ppm products

0.20   0.20  0.003   0.015   0.016

Less than or equal to 2ppm

Note: (1) melting analysis should be per furnace (tank), sampling, analysis of products (including the X coefficient) according to Zhang sample delivery. (2) with "*" the element record analysis results. [H] under the premise of ensuring meltinganalysis, but not for the product analysis. Methods: 4.2 smelting by electric furnace+ refining outside the furnace, and through smelting process vacuum degassing.The plates shall be fine grain steel. 4.3 delivery state: steel plate to normalizing + tempering (allows accelerated cooling) delivery. 4.4 mechanical properties, shallcomply with the provisions of table 2. Table 2 project numerical unit room temperature tensile Rm

Thickness is less than or equal to 100mm 450~~590 MPa

>100~150mm 440~~580 room temperature tensile Rp0.2 less than 100mm thickness greater than 295 MPa

>100~150mm

255

Methods: using electric furnace smelting furnace refining, and through + vacuum degassing of the smelting process. The plates shall be fine grain steel. 4.3 delivery state: steel plate to normalizing + tempering (allows accelerated cooling) delivery.


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Q:Are lead contained in galvanized steel plates and plain steel plates?
Steel plate is made of molten steel, cooled and compressed into flat steel.
Q:How much is a steel sheet per square meter?
If the purchase amount is large, usually by tonnage valuation, such as carbon steel is about 5 tons Qianduoyi, 304 stainless steel more than 10000, of course, the price is floating on the market according to the.
Q:What is the function of an automobile leaf spring?
The longitudinal arrangement also has the function of guiding the force transmission. The non independent suspension mostly adopts the leaf spring as the elastic element, and the guiding device and the shock absorber can be omitted. The structure is simple
Q:What are the properties of deep drawing properties in sheet steel?
If the performance is different on the plane, the ear will appear. On the thickness of the performance is not good, there will be leakage phenomenon. Generally, deep drawing properties are indicated by R values.
Q:What is the difference between color steel plate and hot galvanized sheet?
Color coated substrate of galvanized plate, color coated sheet is coated galvanized plate, some color is aluminium zinc substrate, but now on the market only a few in the Al Zn substrate coated board.
Q:Why can steel HPB300, steel plate without Q300, steel structure manuscript review, but also continued the Q235, why not improve it?
Carbon steel according to the steel yield strength is divided into 5 grades: Q195, Q215, Q235, Q255 and Q275 of each grade because the quality is divided into A, B, C, D grade, with a maximum of four kinds, some only one; this is just plain carbon steel, the price is cheap, generally not heat treatment. Only quality carbon steel has the value of heat treatment.
Q:1.5mm galvanized steel prices?
Well, the purchase depends on how many you have. Dozens of tons of quantity can be customized, the price is relatively cheap 4800 or so, if the quantity is not much, you can only take large steel spot, the price is about 5400
Q:What is muotileaved spring? What is the little leaf spring?
Leaves: by the middle thick and thin steel sheet at both ends of the superposition of equal width. The plate section changes little leaf spring, from the middle to both ends of the cross section is gradually different, therefore the rolling process is more complex, the price is expensive than multi leaf spring. Compared with less leaf spring leaf spring, in the same stiffness (i.e. the same carrying capacity) under the condition of less than the spring leaf light is approximately 50%, reducing fuel consumption, increased ride comfort. And between the little leaf spring monolithic contact, reduces the relative friction and vibration, the ride comfort is increased.
Q:How is the normalized steel plate produced?
Normalizing is the process of heating a steel member to 30-50 degrees above the critical temperature and cooling it in stationary air after proper heat preservation. This process is called normalizing.
Q:What does "Z" mean to the performance of steel?
To apply for Z steel plate thickness and subjected to tensile load on just the thickness direction has the performance requirements, it is in a certain level of structural steel (called parent steel) on the basis of the special treatment (such as calcium treatment, vacuum degassing, argon stirring etc.) and proper heat treatment steel.

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