Carbon and Alloy Tool Steels High Speed Steel Consistently Uniform 1000045159

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    http://www.forgottenbooks.com/redirect.php?where=fb&pibn=1000045159 http://www.forgottenbooks.com/redirect.php?where=it&pibn=1000045159 http://www.forgottenbooks.com/redirect.php?where=es&pibn=1000045159 http://www.forgottenbooks.com/redirect.php?where=fr&pibn=1000045159 http://www.forgottenbooks.com/redirect.php?where=de&pibn=1000045159 http://www.forgottenbooks.com/redirect.php?where=co.uk&pibn=1000045159 http://www.forgottenbooks.com/redirect.php?where=com&pibn=1000045159

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    LUDLUM

    STEEL

    COMPANY

    Carbon and

    Alloy

    Tool

    Steels

    Established

    ^^TLU

    DLU

    M^ ^

    1854

    HIGH

    SPEED

    STEEL

    CONSISTENTLY

    UNIFORM

    General Offices and

    W6rks

    WATERVLIET,

    N. Y.

    byGoogk

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    General

    Offices

    WATERVLIET,

    NEW YORK

    Branch

    Offices:

    New York

    New

    York

    City

    Massachusetts Boston

    Pennsylvania

    Philadelphia

    Pittsburgh

    Ohio

    Cleveland

     

    Cincinnati

    Illinois

    Chicago

    Italy

    Society, I. A.

    F.

    A.

    Genoa

    Digitized

    byGoogk

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    263320

     

    (.^^32/^

    FEB

    21

    1928

    TIDH

    INTRODUCTION

    Digitized

    byGoogk

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    Copyright,

    1918

    LUDLUM

    STEEL

    CX)MPANY

    Watervlibt, Nbw York

    Digitized

    byGoogk

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    INTRODUCTION

    The Ludlum Steel

    Company

    is

    one

    of

    the

    oldest

    established

    high

    grade

    tool

    steel

    mills in

    America,

    founded in

    the

    year

    1854.

    Our

    Pompton

    brand tool

    steel

    is

    probably

    one

    of

    the

    most

    widely

    known

    high

    grade

    American

    steels.

    Our

    mill

    has

    grown

    from

    a

    comparatively

    small

    crucible

    plant

    to

    one

    of the

    larg-st

    high grade

    tool

    steel

    producing

    mills in the

    country.

    We

    make

    nothing

    but

    high

    grade

    tool

    steel,

    therefore

    our

    melters

    and

    rolling

    mill

    men are

    highly

    skilled in

    the

    expert

    handling

    of

    this

    special

    steel.

    The

    crucible

    process

    is

    one

    of

    the oldest

    methods

    of

    making high grade

    steel. The

    product

    is

    governed by

    the

    raw

    material

    used,

    therefore

    even

    though

    the

    highest

    form of

    skilled control be

    applied

    to

    the

    melting

    and

    working

    of

    this

    steel,

    it is of

    no

    avail

    if

    the

    raw

    material

    contains

    some

     unlooked

    for

    im-uritie

    That

    is

    one

    of the

    reasons

    why

    various

    melts

    of

    crucible

    steel,

    made

    from

    the

    same

    high grade

    raw

    material,

    differ

    very

    largely

    in their

    work

    and

    efficiency.

    The

    Ludlum

    Steel

    Company,

    recognizing

    this

    very

    serious

    defect

    in the

    highest

    grade

    crucible

    steel,

    started

    to

    investigate

    methods

    of

    melting

    wherein

    full

    refining

    could

    be

    accomplished,

    the

    crucible

    process

    being

    purely

    one

    of

    remelting.

    The basic and acid

    open

    hearth

    process

    produces

    a

    steel

    which is

    partly

    refined,

    but does

    not

    go

    far

    enough.

    It

    is

    possible

    when

    the

    same

    high

    Digitized

    byGoogk

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    te

    STAB

    IjI

    S HEX)

     ^udl^^

    .

    .

    .

    1854

    .

    .

    .

    grade

    charge

    is

    used

    as

    in

    the

    crucible

    process,

    to

    produce high grade

    steel

    in the

    open

    hearth

    furnace,

    but

    this

    process

    has

    many

    variables and

    for

    that

    reason,

    instead

    of

    continuously

    getting

    a

    reliable

    high

    grade

    product,

    many

    mysteriousthings

    happen

    to

    open

    hearth

    melts,

    which

    are

    undoubtedly

    due

    to

    occluded

    gases.

    The chemical

    analysis

    of

    high

    grade

    cru-ible

    steel

    can

    be

    duplicated

    in

    the

    open

    hearth but

    the

    quality

    of

    steel is

    distinctly

    ifferent.

    Twenty

    years

    ago,

    electric

    furnaces

    were

    being

    substituted

    as

    a

    very

    probable

    means

    of

    eradicating

    the

    dangerous

    gases

    which

    are

    to

    be

    found

    in

    solution

    in

    steel. We

    were

    one

    of

    the

    pioneers

    in

    this

    investigation

    nd

    we

    have

    experi-ented

    with

    practically

    very

    known

    t5T)e

    of

    electric

    furnace

    and

    have

    developed

    a

    special

    form of

     

    electric

    crucible

    furnace

     

    wherein

    we

    get

    all

    of

    the

    benefits

    common

    to

    the

    crucible

    and the

    full

    refining

    possible

    with

    the

    electric

    furnace.

    Our

    customers

    have foxmd that

    our

    steels

    are

    purer

    and

    give

    better

    results

    in

    service,

    than

    any

    other

    type

    of

    steel,

    whether

    it

    be

    crucible

    or

    electric.

    The

    usual

    electric

    furnace,

    of which there

    are

    perhaps

    a

    few

    hxmdred

    in

    operation

    in

    this

    coxmtry,

    has been

    developed

    for

    quantity

    production.

    As these

    furnaces

    produce

    a

    far

    purer

    grade

    of

    steel

    than

    the

    best

    open

    hearth,

    the

    opportunities

    or

    these

    furnaces

    are

    very

    great

    where

    automobile and structural

    alloy

    steels

    are

    concerned. These

    furnaces

    are

    therefore

    manufac-ured

    with

    two

    ideas

    in

    view,

    quantity

    and

    quality.

    6

    Digitized

    byGoogk

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    OONSISTENTr^y

    UNIFORM

    Our

    electric

    crucible

    furnace,

    which

    is

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