316 stainless steel belt has a wide range of USES
by:Hongmei
2020-09-14
316 and 316 l stainless steel belt (
The performance of 316 l stainless steel belt see after)
Is molybdenum stainless steel belt.
Molybdenum content of 316 l stainless steel with slightly higher than the 316 stainless steel band.
Because of molybdenum in steel, the steel grade overall performance is better than that of 310 and 304 stainless steel belt, under the condition of high temperature, when the concentration of sulfuric acid is less than 15% and higher than 85%, the 316 stainless steel belt has a wide range of USES.
316 stainless steel belt also has good performance of chloride erosion, so it is usually used in the Marine environment.
316 l stainless steel with the biggest carbon content is 0.
03 and can be used for welding cannot be after annealing and the purpose of the maximum corrosion resistance.
Corrosion resistance, corrosion resistance is better than that of 304 stainless steel belt, in the process of pulp and paper production has good corrosion resistance performance.
Marine and erosion resistance and 316 stainless steel belt industrial atmosphere.
Heat resistance: the intermittent use of under 1600 degrees and 1700 degrees in the following, continuous use of 316 stainless steel has good oxidation resistance.
In the 800 -
1575 - degree range, it is best not to continuous action 316 stainless steel belt, but outside the temperature range of continuous use 316 stainless steel belt, the stainless steel belt has good heat resistance.
The performance of the resistance of 316 l stainless steel belt carbide precipitation is better than 316 stainless steel belt, can use the above temperature range.
Heat treatment: - in 1850
Annealing temperature range of 2050 degrees, then rapid annealing, and then rapidly cooling.
316 stainless steel belt can't overheating treatment for hardening.
Welding: 316 stainless steel has good welding performance.
Can use all the standard welding method to weld.
When welding, can according to the purpose, 316 or 309 l, 316 cb and cb filler rod or electrode of stainless steel with welding.
In order to obtain the best corrosion resistance, the welding section of 316 stainless steel strip annealing treatment after welding is required.
If you use 316 l stainless steel belt, do not need to undertake annealing treatment after welding.
Typical use: the pulp and paper used equipment, heat exchanger, dyeing equipment, film processing equipment, pipelines, coastal areas building external material of 316 l carbon content & lt;
0.
The carbon content of 03% by 316 as & lt;
0.
08% 0 cr18ni9 material chemical composition is as follows: 1, the physical properties of the nickel and nickel alloy is silvery white, after polishing can long to keep the beautiful luster, the proportion of 8.
9, lattice face-centered cubic.
2, chemical properties of chromium and nickel of two elements in chromium nickel stainless steel belt, is a kind of good stainless steel belt.
Add a large amount of nickel in the stainless steel belt is in order to get a single austenitic organization, so as to improve its corrosion resistance and manufacturability.
Under normal temperature and low temperature has a strong plasticity and toughness, not magnetic, has good resistance to intergranular corrosion.
(
1)
Chromium for chromium stainless steel with corrosion resistant performance plays a main role is to determine the main elements of the stainless steel with corrosion resistance, because of chromium in steel can make the stainless steel belt in oxidizing medium produces passivation phenomenon, which form a very thin layer of film on the surface, enrichment of the chromium in the membrane.
The higher the chromium content in steel and corrosion resistant performance is stronger.
In addition, chromium on mechanical properties of steel and process performance can have very good strengthening effect.
(
2)
The influence of nickel in stainless steel belt only in it to the full performance with chromium.
Nickel is a form of austenitic alloy element, when the nickel and chromium with can make microstructure consists of single phase ferrite to austenite and ferrite bipolar organization, after heat treatment, can improve the strength, to make it have stronger corrosion and the corrosion resistance and good deformation performance.
2, the influence of impurities on the performance when the carbon content is between 0.
1% ~ 0.
3%, after the annealing, will be on the boundary between lattice in a state of graphite carbon precipitation, destroyed the bonding force between the grain, strongly reduce the strength and plasticity of nickel, make the machining deformation produces difficulties.
Another 316 stainless steel with carbon and chromium has a strong affinity, can form a series of carbide.
The higher the carbon content in steel, to form the more chromium carbide, chromium content in the solid solution to decrease relatively, will reduce the corrosion resistance of steel.
Sulfur is harmful impurities, and nickel form Ni3S2 compounds, sulfur Ni3S2 with nickel in 625 ℃ to form low melting eutectic, distribution on the grain boundary, when the temperature of the thermal deformation is more than eutectic melting point, namely along the grain boundary cracking, produce so-called & quot;
Hot short & quot;
Phenomenon.