Samvinna
LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Reverberatory Furnace: the Air Furnace for Melting Cast Iron (Bolland, 1893)
An air furnace melts iron apart from the fuel: coal burns on a grate at one end, and the flame is thrown down from a low arched roof onto the iron on the bed, then leaves by a tall chimney. The iron stays cleaner than in a cupola, so founders used it for guns, rolls, heavy scrap and lumps too big for the cupola.
This furnace is 30 ft 6 in long and 7 ft wide outside, 5 ft wide inside, cased in bolted wrought-iron plates.
Source: S. Bolland, The Iron Founder Supplement (1893), pp. 55-67. Unknown: brick sizes, plate thickness. Picture: Fig. 14 of the book.
Sérfræðingur
Unknown
Leiðbeiningar
1
1
Lay the foundation
Lay the foundation
Build the foundation solid of common material up to the firebrick, shaped so the firebrick bed slopes down from the chimney end to the reservoir. Keep the bricks from B to C 6 in below the finished bottom, to leave room for the sand bed.
Efni fyrir þetta skref:
Múrsteinn1 foundationNauðsynleg verkfæri:
Múrskeið
Óþekkt mál2
2
Build the fireplace, bridge and roof
Build the fireplace, bridge and roof
Build the fireplace the full width of the furnace (5 ft inside, grate 5 ft long). Set the bridge wall at least 2 ft 3 in from the face of the grate bars. Build bridge, sides, roof and fireplace of the most refractory firebrick. Arch the roof the whole length, low, so it throws the flame down onto the bed; fill above the arches with common material. Leave the side charging hole (5 x 4 ft), the top hole (furnace width x 6 ft), the puddling hole over the reservoir, a sight hole and the tap hole.
Efni fyrir þetta skref:
Eldleirssteinar1 lining, bridge, roof
Eldfast leirmúr1 settingMúrsteinn1 filling above the arch
Óþekktur málmur1 grate barsNauðsynleg verkfæri:
Múrskeið3
3
Case it in plates and bolt it
Case it in plates and bolt it
Case the whole structure in wrought-iron plates, held at the corners with angle-irons. Run eight chief anchor bolts from side to side, clear of all working parts. Join everything with bolts, not rivets, so any plate can come off for repairs. Line the charging doors with firebrick.
Efni fyrir þetta skref:
Járnplata1 casing, doors
Teinn úr smíðajárni8 anchor boltsÓþekktur málmur1 angle-irons, door framesEldleirssteinar1 door liningsNauðsynleg verkfæri:
Óþekkt mál4
4
Build the chimney
Build the chimney
Build the chimney square, 30 to 40 ft high, with an inside course of firebrick (Fig. 14: 2 ft 6 in square inside). Make its area a little larger than the fireplace. Put a damper on top that can be worked from the bottom: it alone sets the draught. It can stand apart on a sole plate on four columns.
Efni fyrir þetta skref:
Eldleirssteinar1 inside courseMúrsteinn1 chimneyÓþekktur málmur1 damperNauðsynleg verkfæri:
Múrskeið5
5
Make the sand bottom
Make the sand bottom
Make the bottom from B round the reservoir to C with 8 parts fire-sand to 1 of clay and 1 of ground coke. Fire it well for one to two hours before the first charge; it should last ten heats. Fill the tap hole with fire-sand and a little coal dust, which will not cake when hot.
Efni fyrir þetta skref:
Sandur8 parts
Leir1 part
Málmvinnslukox1 part, groundNauðsynleg verkfæri:
Bikkol6
6
Charge and melt
Charge and melt
Fire with soft, non-caking bituminous coal and keep a full grate; clinker quickly and leave no holes for cold air. Charge all the iron at the start: first layer of pigs lengthwise and a little apart, next layers across, open so the flame passes. Set heavy pieces on firebricks so the flame plays all round them. Through the puddling hole, dip test pieces and skim the iron clean. To blend two grades, thrust green saplings into the melt. Close the damper before tapping. Look the furnace over after every heat.
Nauðsynleg verkfæri:
Bikkol
Hrájárnsstykki
Ungviðarstöng úr harðviði
GatasleifEfni
9- 1 chimneyStaðgengill
- 1 inside courseStaðgengill
- 1 settingStaðgengill
- 1 damperStaðgengill
- 1 casing, doorsStaðgengill
- 8 anchor boltsStaðgengill
- 8 partsStaðgengill
- 1 partStaðgengill
- 1 part, groundStaðgengill
Efni úr tengdum teikningum
Þessi teikning býr til
CC0 opinbert ríki
Þessi teikning er gefin út undir CC0. Þér er frjálst að afrita, breyta, dreifa og nota þetta verk í hvaða tilgangi sem er, án þess að biðja um leyfi.
Studdu smiðinn með því að kaupa vörur í gegnum teikningu hans þar sem hann fær þóknun smiða sem seljendur ákvarða, eða búðu til nýja endurskoðun á þessari teikningu og tengdu hana sem tengingu í þinni eigin teikningu til að deila tekjum.