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US 3,962,528 AGranted
Furnace skewback support with buckstay pivot
AssigneeLectromelt Corporation
InventorPeter J. Wynne
Life of this patent
Estimating the term…
Abstract
A refractory lined electric arc furnace has a hearth, sidewalls and an arched roof. Skewback refractories are disposed between the roof and the sidewalls and are pivotally coupled to vertical support posts which bear against the sidewalls so that the skewbacks may change their angular relation to the sidewalls without inducing undue stresses in the roof as the lower ends of the side walls move inwardly and outwardly as the result of unequal expansion of the hearth relative to the roof.
Claims20
A refractory lined furnace comprising:
- a sidewall and a hearth,
- skewback refractory means disposed along the top of said sidewall,
- an arched roof constructed and arranged for bearing against said skewback refractory means to obtain support for said roof,
- support means adjacent said skewback refractory means and said sidewall, and
- restraining means engaging said skewback refractory means and including bearing means for pivotally connecting said restraining means to said support means and for transfering outwardly directed forces from said skewback refractory means to said support means, said bearing means permitting relative pivotal movement between said restraining means and said support means without inducing forces in said skewback refractory means.
2 more elements
A refractory lined furnace comprising:
- a. a sidewall and a hearth,
- b. skewback refractory means disposed along the top of said sidewall,
- c. an arched roof constructed and arranged for bearing against said skewback means to obtain support for said roof,
- d. support means adjacent said skewback means and said sidewall,
- e. coupling means including means for restraining said skewback means in opposition to forces produced thereon by said roof and pivotal coupling means for pivotally connecting said coupling means to said support means, said pivotal coupling means comprising a first concave bearing member fixed on one of said couplings and support means and a second convex bearing member fixed on the other of said coupling and support means, said members being in complementary contact relation with each other and relatively rotatable.
2 more elements
An electric arc furnace comprising:
- a. a refractory lined furnace body defining a side wall and a hearth and having a top opening.
- b. means for supporting said furnace body,
- c. skewback refractory means disposed along the top of said wall, said skewback refractory means having beveled surfaces,
- d. an arched refractory roof having an edge for engaging said beveled surfaces to support said roof,
- e. a plurality of longitudinally spaced apart support columns adjacent the sides of said furnace,
- f. means for supporting said support columns adjacent said furnace and separately of said furnace supporting means and said furnace body,
- g. coupling means and means for mounting said coupling means for pivotal movement on said support columns, said coupling means having an arm on one side of said pivotal mounting in force exchange relationship with said skewback refractory means and having another arm on the other side of said pivotal mounting, and
- h. means for interconnecting said another arm of said coupling means with a fixed point that is independent of said furnace and said support columns.
5 more elements
An electric arc furnace comprising:
- a refractory lined furnace body defining a side wall and a hearth and having a top opening,
- means for supporting said furnace body,
- a plurality of skewback refractory means disposed along the top of said wall, said skewback means having beveled surfaces,
- an arched refractory roof engaging said beveled
- surfaces to support said roof, a plurality of longitudinally spaced apart support means adjacent said furnace body,
- coupling means engaging said skewback means and pivotal means for mounting said coupling means for pivotal movement relative to said support means, said coupling means having a first portion on one side of said pivotal means in force exchange relationship with said skewback means and having another portion on the other side of said pivotal means, and
- means for interconnecting said another portion of said coupling means with a fixed point that is independent of said furnace and said support means.
4 more elements
Dependencies are inferred from the claim text.