Pudong new district, Shanghai, China.
The characteristic pattern of a checker plate (CK) is formed in the finishing rolling stand of a Hot Strip Mill (HSM) using a special work roll. Metal is removed from the surface of this roll by engraving technique in order to produce the many grooves needed. One roll can produce around 1,200 t of CK, before its surface must be grinded and new ...
The final dimensional quality of the rolled product is determined by the rolling stands within the finishing mill. The dimensional accuracy in the final product depends on many factors including the initial stock dimensions, roll pass sequence, temperature, microstructure, roll surface quality, roll and stand stiffness and the stock/roll friction condition.
Three-High Rolling Mills: In this mill, the three rolls stand in parallel one by others. The rolls are rotating in opposite directions. In this mill, between the first and the second rolls, the material passes. If the second roll rotates in a direction then the bottom roll rotates in another direction. The material is rolled both in forward and ...
Housingless Mills. High rigidity, reliability and quick roll change capabilities are the key features of the state of the art mill stands, which are designed for producing bars, wire rod, angles, channels, and universal beams. The connection and disconnection of the spindles and all the fluid utilities are fully automatic and therefore the ...
Dynamic characteristic analysis of a two-stand reversible cold rolling mill in the startup process was carried out. The delay algorithm of the interstand thickness was proposed. A new method combined with the accelerated secant and the tangent methods was established to solve the simultaneous equations. The thickness and interstand tension transition processes with different static tension ...
A hot-rolling mill for producing sheet metal has a reversing roughing stand having pairs of roughing rolls and a reversing finishing stand adjacent thereto and having pairs of finishing rolls. Each stand is selectively operable alone and both stands are operable in tandem operation. The roughing rolls have diameters larger than the diameters of the finishing rolls and the finishing rolls ...
Scope of application: profile rolling, bar rolling, wire rod rolling mill, finishing rolling stand, seamless steel pipe tension reduction roll ring Specification: Roller diameter ≤ 800mm, roller length ≤ 1000mm. Ni-Cr-Mo Nodular Indefinite Chilled Roll
The 2+4 EVO reducing and sizing mill uses a patented pass design. A reducing group with 2-Roll stands with high reduction is followed by a sizing group with 4-Roll stands with low reduction. While the 2-Roll high reduction guarantees the desired metallurgical structure, the 4-Roll low reduction provides excellent surface finish and size tolerance.
YGH45. Used in the first and second stands of finishing rolling mills and in the stands of per-finishing rolling mills. For every stand of rolling lines for low speed rolling, low precision and unstable operations. YGH55. High binder content in YGHseries, good toughness and thermal crack reslstance.
Material selection of finishing stand roll 122 122 Posted in MFG News The large-scale steel finishing rolling stand must ensure the dimensional accuracy of the profile, the surface quality, and realize the negative tolerance rolling.
rolling mill, and 4 stand finishing rolling mill) was built by Morgan-Sumitomo Heavy Machinery Co. Ltd.. In the 1980s, the aimed qual-ity of products was shifted toward high-value-added special steel quality, and, to achieve this, in 1986, a three-roll finishing rolling mill (applied to products of 13–70 mm in diameter) was employed for the ...
(3) The import guide for the final stand of finishing rolling; (4) The water-cooled guide groove is severely worn; (5) After the finishing mill, a certain water tank or a certain water valve is adjusted too large, resulting in large water resistance or residual water in the water tank (6) Problems with the installation or design of the spinning ...
The invention focuses on improvements to cantilevered roughing, intermediate and finishing rolling mill stands, primarily for long products. A basic improvement to 2-high and cluster mill stands includes mounting of the rolling bearings upon a stationary cantilevered arbor directly under the roll ring, eliminating heavily-loaded main reaction bearings within the stand housing in limited radial ...
finishing rolling mill is "one DC drives two" 6 The highest rolling speed of final products stands to roll Φ10mm. deformed bar is 8m/s. Equipment characteristic. 1. Rolling mill stand adopts pre-stressed type. This type is high. stiffness and easy to change roller. 2. …
BAR & ROD STEEL ROLLING MILL FROM 300,000 TPA TO 500,000 TPA. Furnace Capacity of 50 to 100 TPH. Roughing Rolling Mill Complex with six Housing Less / Pre-Stress shiftable type continuous stands (Horizontal and Vertical) of 560 mm depending on the Rolling mill capacity.
The function of 135m finishing mill group The finishing mill group is composed of top crossed 45° High-speed wire-rod finishing mills. The finishing mill group is located in high-speed wire-rod workshop. Through 10 unit rack the continuous micro-tension rolling mill will be transported upstream Æ 17 ~ Æ 21mm of rolling, rolling become Æ 5.5 ~ Æ 16mm finished ...
Multi-stand lead line mill types from FENN may include: 4-HI Mill: A 4-HI mill may be used for finish rolling of thin gauge stock. 6-HI roll inserts are also available for narrow width ribbon and foil products. 2-HI Mill: Generally, a 2-HI mill is used for …
CSI's Hot Strip Mill includes six finishing mills, which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature, between 1500° to 1650°F, specified to reach certain mechanical properties.
SMS Five-Stand Hot Finishing Rolling Mill. Cold rolling. YIKUO has purchased 6 sets ofcold rolling mill (4 sets of single-stand mill and 2 sets of three-stand tandemmill) from SMS Group Germany. All these mills are applied with SMS patent6-High CVC technology and are the most advanced cold rolling mills in the worldcurrently. The cold rolling ...
Pre-finishing rolling mill (4 stands) process parameters and equipment performance 1. Process parameters(1) Specifications of the first stand inlet: F28 ~ F3...
The final dimensional quality of the rolled product is determined by the rolling stands within the finishing mill. The dimensional accuracy in the final product depends on many factors including the initial stock dimensions, roll pass sequence, temperature, microstructure, roll surface quality, roll and stand stiffness and the stock/roll friction condition.
The rolling mill is made up of a multiplicity of fixed three-roll rolling units... WO/1997/047407A1 ROLLING MILL STAND This invention comprises improvements to cantilevered roughing, intermediate and finishing rolling mill stands, as primarily applied to the hot rolling of long products.
used rolling mill,used gearbox used rolling mill,used housingless stand used flying shear steel roughing mill roughing mill bar and wire rod mill used laying head 135m laying head second hand pinch roll equipment steel rolling production line second hand rolling mill used steel block mill flying shear 1# flying shear 2hi rolling mill 2hi ...
Implementation of the new forward slip model for the control of a 7-stand hot strip tandem rolling mill shows significant improvement in roll speed set-up accuracy.
What is the continuous casting and rolling process of packaging steel strip and thin slab? Answer: The thin slab continuous casting and rolling process is mainly composed of four parts: continuous casting, soaking, continuous rolling and flat coiling.
The cluster mill stand has two work rolls and four or more backup rolls. The number of backup or supporting-rolls depends upon the amount of support needed for the work (small diameter) rolls. Cluster mill is normally used in cold-rolling operation. The …
The closed stand is an integral frame with high strength and rigidity, which is mainly used in the blooming mill and strip mill with a large rolling force. The open frame is composed of the frame body and the upper cover, which is convenient for roll changing. It is mainly used in the cross-section mill. In …
Finishing Rolling Mill Process Explanation Maintaining product consistency and quality in the manufacturing process is a widespread concern as a result of increasing competition in the world markets. Hot steel rolling is one of the most important steel manufacturing processes.
Our Mill Stand sizes vary in accordance with the required dimensions of rolls and necks, the groove design and the transmission and drive characteristics. Our engineers have the expertise and experience to develop and design Mill Stands to suit any steel mill's specific needs and requirements.
1.2.5 Cooling. After exiting the finishing mill, the strip, at a temperature of 800–900°C, is cooled further under controlled conditions by a water curtain on the run-out table. The run-out table may be as long as 150–200 m. Cooling water is sprayed on the top of the steel at a flow rate of 20,000–50,000 gpm; and on the bottom surface at ...
This mill configu-ration is often used for height-strength- Technical Report UDC 621 . 771 . 25 Progress of Bar and . rolling mills (8 stand roughing rolling mill, 4 stand intermediate rolling mill, and 4 stand finishing rolling mill) was built by Morgan-Sumitomo Heavy Machinery Co. Ltd..
rolling stand of the finishing mill. As one can see, the frac-tion of good records fall slightly from F1 to F4 but, anyway, for such stands this fraction was greater than 99%. The situation of F5 is somewhat worse, with 92% of good data records, but F6 shows unsatisfactory results, as this
The process stability of finishing mill is significantly influenced by the clearance between the chocks and housing in mill stands. The on-site data of a finishing mill had shown that the clearances in the finishing mill stands were clearly
2.3 Roll of Medium Section Mill. There are many kinds of rolls of 650mm, 630mm, 580mm, and 500mm used in the medium section mill in China. Most of the rolling mills are of three rolls open horizontal type. The roll material used in each stand has not changed greatly for many years. Low alloy cast steel rolls are almost used in one frame.
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