Classifications

• • C—CHEMISTRY; METALLURGY
  • C21—METALLURGY OF IRON
  • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
  • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
  • C21C5/28—Manufacture of steel in the converter
  • C21C5/42—Constructional features of converters
  • C21C5/46—Details or accessories
  • C21C5/4633—Supporting means
• • C—CHEMISTRY; METALLURGY
  • C21—METALLURGY OF IRON
  • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
  • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
  • C21C5/28—Manufacture of steel in the converter
  • C21C5/42—Constructional features of converters
  • C21C5/46—Details or accessories
  • C21C5/50—Tilting mechanisms for converters

Definitions

• the invention relates to a tiltable converter with a
• Converter vessel which is surrounded at a distance from a support ring, wherein the support ring has two opposite support pin for tilting about a tilt axis and wherein a suspension of the converter vessel on the support ring four circumferentially distributed suspension pendulum elements comprising vertical forces from the converter vessel on the support ring with standing upright converter transfer .
• Converters are used in steelmaking and usually have a charging side and a tapping side. In some cases, for logistical reasons, it will be charged and tapped from the same page. About the
• Charging page is the filling of the converter, which is usually inclined by about 45 °.
• the converter is tilted towards the tapping side.
• the tilting axis is determined by two support pins diametrically opposed to the support ring. In this case, usually only one support pin is connected to a tilting drive. Sometimes both trunnions are provided with drives.
• the support ring surrounds the converter vessel, which is connected via a suspension with the support ring.
• This suspension transfers the forces from the converter vessel to the support ring.
• the forces to be transmitted are influenced by the filling level and the tilting position of the converter vessel as well as by dynamic loads.
• the design of the suspension must take into account that it occurs as a result of
• Support ring comes. It is known from DE 43 27 640 AI a suspension by means of pendulum elements (links), which are mounted spherically both on the converter vessel and on the support ring.
• pendulum elements links
• Embodiment when viewing the upright converter three horizontal and three vertical pendulum elements are arranged.
• a statically determined suspension of the converter vessel is realized in the support ring.
• this arrangement has the disadvantage that not all vertical pendulum elements are charged equally.
• the space required for this type of suspension is disadvantageous.
• Other known embodiments comprise two horizontal ones
• Pendulum elements and a claw Pendulum elements and a claw.
• Another embodiment includes an additional vertical shuttle and thus redundancy. This is to ensure that in case of complete failure of a
• Support element continues to be a safe power transmission possible in all tilted positions.
• an over-dimensioning of the support elements should be provided in order to ensure sufficient in case of failure
• WO 2011/069395 Al discloses a suspension with four vertical pendulum elements, which are arranged symmetrically on the circumference of the converter vessel. This results
• the invention has for its object to provide an improvement over the prior art for a tiltable converter of the type mentioned. According to the invention this object is achieved by a
• Converter vessel in the support ring takes place both on the vessel and on the support ring by means of spherical bearings.
• each bearing has a pivot around which the respective
• Suspension pendulum element is pivotable.
• the lines of action of the transmitted forces are determined by the two bearing pivots of each suspension pendulum element, when the frictional forces in the bearings are neglected.
• the respective storage position determined in this context, the location of the respective bearing pivot point.
• the present invention provides deviations from the
• Converter vessel and support ring takes place within the space available for the suspension of the largest possible
• Suspension pendulum elements maintains a degree of freedom that allows easy mounting of the fourth suspension pendulum element.
• Suspension pendulum elements during a tilting process have an approximately equal maximum load. This uniform distribution of the maximum loads on all four suspension pendulum elements allows a reduction of the component dimensions over known suspension systems or a longer life of the suspension elements.
• Suspension pendulum elements horizontally and / or vertically offset are also arranged rotationally symmetrical with respect to a longitudinal axis of the converter.
• suspension pendulum elements horizontally and / or vertically offset are also arranged rotationally symmetrical with respect to a longitudinal axis of the converter.
• suspension pendulum elements of the first pair and the suspension pendulum elements of the second pair are each designed to be identical.
• the suspension pendulum elements of a pair are longer than the other pendulum elements to the distance between the
• Suspension pendulum elements is cheaper to carry out in this way. Likewise, in a fault case the
• Suspension pendulum elements on one side of the converter is larger in relation to the ratio of the bearing positions of the two suspension pendulum elements on the other side.
• the force lines of action of the forces transmitted by the suspension pendulum elements on the charging side then intersect a vertical median plane through the tilting axis at a higher or lower point than the force lines of action of the pendulum pendulum elements on the racking side
• Tilting axis balanced by forces in the suspension pendulum elements Tilting axis balanced by forces in the suspension pendulum elements.
• a simple construction of such an arrangement provides that the lines of action of the forces transmitted by the suspension pendulum elements on the tapping side have a common first intersection with the longitudinal axis of the converter and that the lines of action of the
• Charging side have a common second intersection with the longitudinal axis of the converter.
• Angular range from 40 ° to 50 ° with respect to the tilt axis are arranged. Such an arrangement causes a
• the suspension then includes six pendulum elements.
• the converter 1 comprises a vessel 2 which is suspended at a distance in a support ring 3 by means of a plurality of support elements 6, 7, 8, 9, 10, 11. Four of these support elements are as
• Suspension pendulum elements 6, 7, 8, 9 carried out and serve to transmit the forces from the converter vessel 2 to the support ring 3 with upright converter 1. In this case take the suspension pendulum elements 6, 7, 8, 9 due to an oblique orientation and horizontal forces, which however, cancel each other out. In neglect
• Two horizontal pendulum elements 10, 11 serve the
• Kippaber is the converter 1 by means of two arranged on the support ring 3 trunnions 4, 5, which are rotatably mounted in supports, not shown, and the tilt axis a
• a plane which is spanned by the tilting axis a and a longitudinal axis b of the converter 1, divides the converter 1 into two sides, which are defined as charging side C (charging side) and as tapping side T (tapping side).
• charging side C charging side
• tapping side T tapping side
• a pair of suspension pendulum elements 6, 7 and 8, 9 are arranged on each side.
• at least two suspension pendulum elements 6, 7, 8, 9 with offset bearing positions 62, 63, 72, 73, 82, 83 and 92, 93 are provided. So not all
• Suspension pendulum elements 6, 7, 8, 9 arranged rotationally symmetrically with respect to the longitudinal axis b.
• Fulcrum defines the respective storage position 62, 63, 72, 73, 82, 83 92, 93 within the arrangement.
• Suspension pendulum element pairs (6, 7 or 8, 9) thus has a respective common point of intersection Sl or S2.
• Displacement of the bearing positions 62, 63, 72, 73, 82, 83, 92, 93 is provided against a rotationally symmetrical arrangement.
• the suspension pendulum elements 6, 7 on the tapping side T have a greater inclination than the suspension pendulum elements 8, 9 on the charging side C.
• the ratio of the horizontal distance to the vertical distance of each arranged on the converter vessel 2 and the support ring 3 bearing positions 62, 63, 72, 73, 82, 83, 92, 93 is then on the rack side T larger than on the
• the distance between the two points of intersection Sl, S2 acts as a lever arm of a bearing moment, the one from
• Converter vessel 2 on the support ring 3 transmitted torque and counteracts forces in the direction of the tilt axis a.
• a moment arises in an upright converter position, for example, by dynamic movement forces F d of Converter contents.
• this bearing moment also counteracts a moment which forms the weight force F G with a distance x to the intersection of the tilting axis a with the longitudinal axis b.
• the respective angle is ⁇ 6, ⁇ 7, ⁇ 8, ⁇ 9 between a central axis of the respective one
• Suspension pendulum element 6, 7, 8, 9 and the tilting axis a about 45 °.
• a range between 40 ° and 50 ° makes sense.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Carbon Steel Or Casting Steel Manufacturing (AREA)
• Apparatus For Radiation Diagnosis (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (6)

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Citations (2)

Family Cites Families (2)

• 2011
  • 2011-12-19 EP EP11194201.7A patent/EP2607501A1/de not_active Withdrawn
• 2012
  • 2012-11-23 EP EP12798651.1A patent/EP2794933B1/de active Active
  • 2012-11-23 RU RU2014129911A patent/RU2014129911A/ru not_active Application Discontinuation
  • 2012-11-23 KR KR1020147020403A patent/KR20140107554A/ko not_active Application Discontinuation
  • 2012-11-23 WO PCT/EP2012/073421 patent/WO2013092108A1/de active Application Filing
  • 2012-11-23 CN CN201280062850.3A patent/CN103998628B/zh active Active
  • 2012-11-23 PL PL12798651T patent/PL2794933T3/pl unknown

Patent Citations (3)

Non-Patent Citations (1)

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