Hot rolled stainless steel plate is stainless steel plate produced by hot rolling process. The thickness of hot rolled stainless steel plate is not more than 3mm for thin plate, and the thickness is more than 3mm for thick plate. It is used in chemical, petroleum, machinery, shipping and other industries to manufacture corrosion-resistant parts, containers and equipment. Its classification and grades are as follows.
(1)1Cr17Mn6Ni15N; (2)1Cr18Mn8Ni5N; (3)1Cr18Ni9; (4)1Cr18Ni9Si3; (5)0Cr18Ni9
(6) 00Cr19Ni10; (7) 0Cr19Ni9N; (8) 0Cr19Ni10NbN; (9) 00Cr18Ni10N; (10) 1Cr18Ni12; (11) 0Cr23Ni13
(11) 0Cr23Ni13; (12) 0Cr25Ni20; (13) 0Cr17Ni12Mo2; (14) 00Cr17Ni14Mo2.
(15) 0Cr17Ni12Mo2N; (16) 00Cr17Ni13Mo2N; (17) 1Cr18Ni12Mo2Ti; (18) 0Cr18Ni12Mo2Ti; (19) 1Cr18Ni12Mo2Ti
(19) 1Cr18Ni12Mo3Ti; (20) 0Cr18Ni12Mo3Ti; (21) 0Cr18Ni12Mo2Cu2; (22) 00Cr18Ni12Mo2Ti
(22) 00Cr18Ni14Mo2Cu2; (23) 0Cr19Ni13Mo3; (24) 00Cr19Ni13Mo3; (25) 0Cr18Ni16Mo5; (26) 0Cr18Ni16Mo5
(26) 1Cr18Ni9Ti ； (27) 0Cr18Ni10Ti ； (28) 0Cr18Ni11Nb ； (29) 0Cr18Ni13Si4
(30) 0Cr26Ni5Mo2; (31) 00Cr18Ni5Mo3Si2.
（32）0Cr13Al; (33) 00Cr12; (34) 1Cr15; (35) 1Cr17; (36) 1Cr17Mo; (37) 00Cr17Mo
(38)00Cr18Mo2 ； (39)00Cr30Mo2 ； (40)00Cr27Mo
(41) 1Cr12; (42) 0Cr13; (43); 1Cr13; (44) 2Cr13; (45) 3Cr13; (46) 4Cr13
( 47 ) 3Cr16 ; ( 48 ) 7Cr17
( 49 ) 0Cr17Ni7Al
1.1 Reduce the friction coefficient, reduce the rolling force
Due to the reduction of friction coefficient, so that the rolling force is reduced, generally for can reduce the rolling force 10% ~ 25%, so as to reduce the rolling power, saving energy,.
1.2 Reduce roll consumption, improve the operating rate
Under hot rolling conditions, the work roll surface oxidation occurs due to long-term contact with cooling water, the formation of black skin, which is the main cause of abnormal roll wear. The use of special lubricants can effectively prevent the formation of black skin on the roll surface, extend the life of the roll, reduce the number of roll changes, and improve the operating rate of the mill.
1.3 Improve the surface quality after rolling
The reduction of roll wear and the reduction of black skin directly improve the quality of the post-rolling surface.
1.4 Improve the internal organizational properties of the product
Process lubrication can improve the grain organization of the strip after rolling and improve its deep punching performance.
1.5 Energy saving and consumption reduction
After adopting process lubrication, the average power saving of hot rolling ton of steel is 3 degrees; the pickling acid is reduced by 0.3~1.0kg; the metal consumption is reduced by 1.0kg; the consumption of rolls can be reduced by 30%~50%.
Usually the hot rolling lubricant is delivered to the surface of rolls in the form of oil-water mixture, water is the carrier, and a small amount of oil is evenly dispersed in water. The action process of oil-water mixture is the transformation process of water-in-oil phase to oil-in-water phase. After the mixed liquid reaches the roll surface, in the form of oil in water quickly in the roll surface, when entering the deformation zone and high-temperature rolling contact, due to the role of temperature and pressure, the water quickly evaporated and turned into oil in water phase, part of the oil burned into ash-based combustion; part of the oil is in the form of oil film uniformly covered in the roll and rolling contact arc, both in the deformation zone about 0.01s of time Both can play the role of lubrication.
3.1 Performance of lubricant for hot rolling process
3.1.1 Good and stable lubricating property
3.1.2 Good wettability and adhesion, can be evenly dispersed on the surface of rolls and firmly adhered.
3.1.3 Good oxidation resistance and decomposition resistance under high temperature, ensure no combustion and decomposition before contact with the rolls.
3.1.4 Good anti-emulsification and water spreading property.
3.1.5 Non-toxic and tasteless, meanwhile, the gas produced in decomposition is also non-toxic and tasteless, and the combustion products are non-toxic and do not pollute the environment.
3.2 The composition and types of lubricants for hot rolling process
Hot-rolling oil has two forms: water-based and oil-based, and most manufacturers currently use oil-based hot-rolling oil.
General hot rolling oil consists of base oil and oily agent two parts, base oil has mineral oil, polyolefin, ester oil; oily agent has animal and vegetable oil, fatty acid, advanced fatty acid, synthetic grease, solid lubricant, etc.