CN110343976A - A kind of sulfur-bearing contains phosphorus easy cutting steel and its production method - Google Patents
A kind of sulfur-bearing contains phosphorus easy cutting steel and its production method Download PDFInfo
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- CN110343976A CN110343976A CN201910744568.7A CN201910744568A CN110343976A CN 110343976 A CN110343976 A CN 110343976A CN 201910744568 A CN201910744568 A CN 201910744568A CN 110343976 A CN110343976 A CN 110343976A
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- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
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- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Abstract
A kind of sulfur-bearing contains phosphorus easy cutting steel and its production method, it belongs to automatic steel preparation method field.The present invention includes following component: the Mn of the Si of the C of 0.09~0.12wt%, 0.20~0.25wt%, 0.85~0.90wt%, the Al of the S of the P of 0.10~0.14wt%, 0.13~0.17wt%, 0.008~0.015wt%, surplus is iron, and the mass ratio of the Mn and S are 5.5~6.0:1.A kind of sulfur-bearing produced by the invention has cutting smooth containing phosphorus easy cutting steel, and material is excellent, and processing is stablized, and metallographic structure is good, and chemical analysis is stable, deviation is small, not the features such as easy damaged cutter；It is easy in lathe grinding, cutter life and production efficiency improve 40%；Substantially reduce product cost；Workpiece surface finish after Vehicle Processing is good.
Description
Technical field
The invention belongs to automatic steel preparation method fields；More particularly to a kind of sulfur-bearing, contain phosphorus easy cutting steel and its production
Method.
Background technique
Automatic steel refers to that the sulphur that a certain number of one or more are added in steel, phosphorus, lead, calcium, selenium, tellurium etc. are easy
Element is cut, to improve the steel alloy of its machinability.With the automation of machining, high speed and precise treatment, it is desirable that steel
It is very important with good free-cutting machinability, this kind of steel is mainly used for processing on automatic cutting lathe.Sulphur in steel with Mn
MnS field trash is formed, the continuity of matrix can be interrupted, chip is made to be easy to brittle failure, reduces the contact area of chip and cutter.Sulphur is also
It can play antifriction, be not adhere to chip on cutting edge.For phosphorus mostly and in the compound addition steel of sulphur, phosphorus is solid-solution in meeting in ferrite
Hardness and strength are improved, toughness is reduced, makes chip be easy to fracture and exclude, to obtain good machined surface roughness.
Summary of the invention
It is an object of the present invention to provide a kind of sulfur-bearing, contain phosphorus easy cutting steel and its production method.
The invention is realized by the following technical scheme:
A kind of sulfur-bearing contains phosphorus easy cutting steel, and a kind of sulfur-bearing containing phosphorus easy cutting steel includes following component: 0.09~
The P of the Mn of the Si of the C of 0.12wt%, 0.20~0.25wt%, 0.85~0.90wt%, 0.10~0.14wt%, 0.13~
The Al of the S of 0.17wt%, 0.008~0.015wt%, surplus are iron, and the mass ratio of the Mn and S are 5.5~6.0:1.
A kind of sulfur-bearing of the present invention contains phosphorus easy cutting steel, and a kind of sulfur-bearing containing phosphorus easy cutting steel includes following
Ingredient: the S of the P of the Mn of the Si of the C of 0.11wt%, 0.22wt%, 0.86wt%, 0.13wt%, 0.15wt%, 0.011wt%
Al, surplus is iron, and the mass ratio of the Mn and S is 5.73:1.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
The production procedure of the production method of steel are as follows: electric furnace smelting, LF furnace refining → soft blow, bull ladle → ingot steel casting → delay hot sending or cover
Cold → Heating Steel Ingots → steel ingot cogging → heap is cold, and → steel billet cleaning → flaw detection → heating steel billet → small rolling bar → heap is cold → is rectified
Directly → flaw detection → reconditioning → pointing → base fire → pickling → cold-drawn → polishing → inspection inspection → is submitted.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
The mass fraction of C is 0.05~0.08wt% when electric furnace smelting in the production method of steel, and tapping temperature is 1600~1640 DEG C.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
0.5m/t feeds aluminum steel when LF furnace refines in the production method of steel, and when precipitation desoxydation, middle manganese dosage is 5~6kg/t, and aluminum shot 1~
1.5kg/t, with silicon powder, carbon dust diffusive deoxidation, silicon powder dosage is 1~1.5kg/t, and carbon dust dosage is 0.6~0.8kg/t, is mixed
After use, the low basicity slag in, the mass ratio of basic anhydride calcium oxide and acidic oxide silica is 2~2.5:1,
Aluminum oxide content is 10%~15wt%, white slag 20~30min of refining time, after reaching white slag, adjusts P by specification requirement
Ingredient is 0.10~0.14wt%.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
Soft blow adjusts S ingredient to 0.13~0.17wt% by 100% rate of recovery feeding sulphur line in the production method of steel, then plus keeps the temperature
Agent carbonization rice husk 50~55kg/ furnace, 15~20min of soft blow time, with top of the slag fine motion, subject to not exposed molten steel, oxygen content in steel
20~60ppm.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
1575~1580 DEG C of bull ladle temperature in the production method of steel.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
Ingot steel casting ingot body infuses 300~400S of speed in the production method of steel, and riser infuses 240~300S of speed.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
In the production method of steel the heating one-stage control temperature of heating steel billet be 1000~1120 DEG C, heating the one-stage control time be 40~
60min heats two sections controlled at 1220~1260 DEG C, and heating two control times is 25~30min, soaking zone control temperature
Degree is 1210~1250 DEG C, and the soaking zone time controls the time as 2~3h, and 1210~1250 DEG C of tapping temperature, steel billet is high after coming out of the stove
Press 220~240bar of water descaling mill water pressure, cleared iron oxide on surface of billet steel skin.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing, phosphorous Cutting free
In the production method of steel small rolled bar base type be 230 sides, 1150~1250 DEG C of start rolling temperature, after high temperature rolls fastly, semifinished product flame
Cut both ends.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, in general, sulphur are the nocuousness members in steel
Element, it is indivisible impurity in steel-making.Sulphur solubility and small in solid iron, it can form low melting point (1190 DEG C) with iron
FeS.The eutectiferous fusing point of FeS combination Fe is lower (989 DEG C).The eutectic of this low melting point is generally in the form of divorsed eutectic
It is distributed on crystal boundary.When carrying out hot-working (forging, rolling) to steel, heating temperature is often at 1000 DEG C or more, at this moment on crystal boundary
FeS+Fe eutectic melting, the cracking of steel when leading to hot-working.This phenomenon is known as " hot-short " or " red crisp " of steel.When the oxygen of steel
Content will form fusing point lower Fe, FeS, FeO eutectic when high, keep hot-short tendency bigger.Described one kind prepared by the present invention
Sulfur-bearing contains phosphorus easy cutting steel, and steel " hot-short " and " cold short " phenomenon do not generate, steel surface flawless.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel utilize the parent of manganese and sulphur with manganese come desulfurization
It is bigger than iron and sulphur with power, manganese sulfide is preferentially formed, iron sulfide is reduced.Manganese sulfide fusing point is high (1600 DEG C), has under high temperature certain
Plasticity will not be such that steel generates hot-short.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, in the relatively low steel of the mass fraction of carbon
In, the intensity of steel is improved using phosphorus, phosphorus can also improve the corrosion resistance of steel in an atmosphere, guarantee to obtain fine grain structure
Under conditions of, the cold short of phosphorus is inhibited, and while tensile strength and yield strength improve, low-temperature flexibility still keeps required
Level.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, adjust suitable oxygen content and promote in steel
MnS be in spindle or elliposoidal, be conducive to improve cutting ability.However not the higher the better for the oxygen content in automatic steel,
Too high oxygen level will affect cc billet surface quality, generate rimhole, and oxide inclusion content height is unfavorable to wearing, finally
Also properties of product be will affect.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel, it is a kind of sulfur-bearing of production, phosphorous
Automatic steel has cutting smooth, and material is excellent, and processing is stablized, and metallographic structure is good, and chemical analysis is stable, deviation is small, not rapid wear
The features such as hurting cutter；It is easy in lathe grinding, cutter life and production efficiency improve 40%；Substantially reduce product at
This；Workpiece surface finish after Vehicle Processing is good.
A kind of sulfur-bearing of the present invention, the production method containing phosphorus easy cutting steel solve Cutting free compared with prior art
Steel " hot-short " and " cold short phenomenon " guarantee the machinability of steel simultaneously.Production cost reduces compared with prior art, and 60
Member/t, without vacuumizing, while machinability is good.
Specific embodiment
Specific embodiment 1:
A kind of sulfur-bearing contains phosphorus easy cutting steel, and a kind of sulfur-bearing containing phosphorus easy cutting steel includes following component:
The Al of the S of the P of the Mn of the Si of the C of 0.11wt%, 0.22wt%, 0.86wt%, 0.13wt%, 0.15wt%, 0.011wt%,
Surplus is iron, and the mass ratio of the Mn and S are 5.73:1.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The production procedure of the production method of Cutting Steel are as follows: electric furnace smelting, LF furnace refining → soft blow, bull ladle → ingot steel casting → delay hot sending
Or cover cold → Heating Steel Ingots → steel ingot cogging → heap it is cold → steel billet cleaning → flaw detection → heating steel billet → small rolling bar → heap is cold
→ aligning → flaw detection → reconditioning → pointing → base fire → pickling → cold-drawn → polishing → inspection inspection → is submitted.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The mass fraction of C is 0.08wt% when electric furnace smelting in the production method of Cutting Steel, and tapping temperature is 1640 DEG C.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
0.5m/t feeds aluminum steel when LF furnace refines in the production method of Cutting Steel, and when precipitation desoxydation, middle manganese dosage is 6kg/t, aluminum shot
1kg/t, with silicon powder, carbon dust diffusive deoxidation, silicon powder dosage is 1.5kg/t, and carbon dust dosage is 0.6kg/t, is used after mixing, is used
The mass ratio of middle low basicity slag, basic anhydride calcium oxide and acidic oxide silica is 2.5:1, aluminum oxide content
It is 0.14wt% by specification requirement adjustment P ingredient after reaching white slag for 15wt%, white slag refining time 20min.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Then plus heat preserving agent soft blow adjusts S ingredient to 0.17wt% by 100% rate of recovery feeding sulphur line in the production method of Cutting Steel,
Carbonization rice husk 50kg/ furnace, soft blow 15min, with top of the slag fine motion, subject to not exposed molten steel, oxygen content in steel 60ppm.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
1580 DEG C of bull ladle temperature in the production method of Cutting Steel.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Ingot steel casting ingot body infuses speed 300S in the production method of Cutting Steel, and riser infuses speed 240S.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The heating one-stage control temperature of heating steel billet is 1120 DEG C in the production method of Cutting Steel, and the heating one-stage control time is 60min,
Two sections of heating heats two control times controlled at 1260 DEG C as 25min, and soaking zone is controlled at 1250 DEG C, soaking
Control time section time is 2h, and 1210 DEG C of tapping temperature, 220~240bar of high-pressure water descaler water pressure, is removed after steel billet is come out of the stove
Net iron oxide on surface of billet steel skin.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Small rolled bar base type is 230 sides in the production method of Cutting Steel, and 1150 DEG C of start rolling temperature, after high temperature rolls fastly, semifinished product flame is cut
Cut both ends.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing of preparation,
Performance parameter containing phosphorus easy cutting steel is as shown in table 1:
1 sulfur-bearing of table, the performance parameter contrast table containing phosphorus easy cutting steel
A kind of sulfur-bearing that a kind of sulfur-bearing described in present embodiment, the production method containing phosphorus easy cutting steel generate,
Containing phosphorus easy cutting steel, tensile strength 615N/mm2, elongation 20.5%, hardness reaches 185HB, and comprehensive performance is better than existing skill
Art.
Specific embodiment 2:
A kind of sulfur-bearing contains phosphorus easy cutting steel, and a kind of sulfur-bearing containing phosphorus easy cutting steel includes following component:
The Al of the S of the P of the Mn of the Si of the C of 0.09wt%, 0.20wt%, 0.85wt%, 0.10wt%, 0.15wt%, 0.008wt%,
Surplus is iron, and the mass ratio of the Mn and S are 5.6:1.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The production procedure of the production method of Cutting Steel are as follows: electric furnace smelting, LF furnace refining → soft blow, bull ladle → ingot steel casting → delay hot sending
Or cover cold → Heating Steel Ingots → steel ingot cogging → heap it is cold → steel billet cleaning → flaw detection → heating steel billet → small rolling bar → heap is cold
→ aligning → flaw detection → reconditioning → pointing → base fire → pickling → cold-drawn → polishing → inspection inspection → is submitted.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The mass fraction of C is 0.05wt% when electric furnace smelting in the production method of Cutting Steel, and tapping temperature is 1600 DEG C.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
0.5m/t feeds aluminum steel when LF furnace refines in the production method of Cutting Steel, and when precipitation desoxydation, middle manganese dosage is 5kg/t, aluminum shot
1kg/t, with silicon powder, carbon dust diffusive deoxidation, silicon powder dosage is 1kg/t, and carbon dust dosage is 0.6kg/t, is used after mixing, in
The mass ratio of low basicity slag, basic anhydride calcium oxide and acidic oxide silica is 2:1, and aluminum oxide content is
10%wt%, white slag refining time 20min is 0.10wt% by specification requirement adjustment P ingredient after reaching white slag.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Then plus heat preserving agent soft blow adjusts S ingredient to 0.13wt% by 100% rate of recovery feeding sulphur line in the production method of Cutting Steel,
Carbonization rice husk 50kg/ furnace, soft blow 15min, with top of the slag fine motion, subject to not exposed molten steel, oxygen content in steel 20ppm.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
1575 DEG C of bull ladle temperature in the production method of Cutting Steel.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Ingot steel casting ingot body infuses speed 300S in the production method of Cutting Steel, and riser infuses speed 240S.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The heating one-stage control temperature of heating steel billet is 1000 DEG C in the production method of Cutting Steel, and the heating one-stage control time is 40min,
Two sections of heating heats two control times controlled at 1220 DEG C as 25min, and soaking zone is controlled at 1210 DEG C, soaking
Control time section time is 2h, and 1210 DEG C of tapping temperature, 220~240bar of high-pressure water descaler water pressure, is removed after steel billet is come out of the stove
Net iron oxide on surface of billet steel skin.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Small rolled bar base type is 230 sides in the production method of Cutting Steel, and 1150 DEG C of start rolling temperature, after high temperature rolls fastly, semifinished product flame is cut
Cut both ends.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing of preparation,
Performance parameter containing phosphorus easy cutting steel is as shown in table 2:
2 sulfur-bearing of table, the performance parameter contrast table containing phosphorus easy cutting steel
A kind of sulfur-bearing that a kind of sulfur-bearing described in present embodiment, the production method containing phosphorus easy cutting steel generate,
Containing phosphorus easy cutting steel, tensile strength 604N/mm2, elongation 18.5%, hardness reaches 179HB, and comprehensive performance is better than existing skill
Art.
Specific embodiment 3:
A kind of sulfur-bearing contains phosphorus easy cutting steel, and a kind of sulfur-bearing containing phosphorus easy cutting steel includes following component:
The Al of the S of the P of the Mn of the Si of the C of 0.12wt%, 0.25wt%, 0.90wt%, 0.14wt%, 0.163wt%, 0.015wt%,
Surplus is iron, and the mass ratio of the Mn and S are 5.52:1.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The production procedure of the production method of Cutting Steel are as follows: electric furnace smelting, LF furnace refining → soft blow, bull ladle → ingot steel casting → delay hot sending
Or cover cold → Heating Steel Ingots → steel ingot cogging → heap it is cold → steel billet cleaning → flaw detection → heating steel billet → small rolling bar → heap is cold
→ aligning → flaw detection → reconditioning → pointing → base fire → pickling → cold-drawn → polishing → inspection inspection → is submitted.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The mass fraction of C is 0.1wt% when electric furnace smelting in the production method of Cutting Steel, and tapping temperature is 1620 DEG C.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
0.5m/t feeds aluminum steel when LF furnace refines in the production method of Cutting Steel, and when precipitation desoxydation, middle manganese dosage is 5.5kg/t, aluminum shot
1.2kg/t, with silicon powder, carbon dust diffusive deoxidation, silicon powder dosage is 1.2kg/t, and carbon dust dosage is 0.7kg/t, uses, adopts after mixing
With middle low basicity slag, the mass ratio of basic anhydride calcium oxide and acidic oxide silica is 2.3:1, and aluminum oxide contains
Amount is 12wt%, white slag refining time 25min, is 0.12wt% by specification requirement adjustment P ingredient after reaching white slag.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Then plus heat preserving agent soft blow adjusts S ingredient to 0.16wt% by 100% rate of recovery feeding sulphur line in the production method of Cutting Steel,
Carbonization rice husk 52kg/ furnace, soft blow 20min, with top of the slag fine motion, subject to not exposed molten steel, oxygen content in steel 40ppm.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
1580 DEG C of bull ladle temperature in the production method of Cutting Steel.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Ingot steel casting ingot body infuses speed 350S in the production method of Cutting Steel, and riser infuses speed 260S.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
The heating one-stage control temperature of heating steel billet is 1100 DEG C in the production method of Cutting Steel, and the heating one-stage control time is 50min,
Two sections of heating heats two control times controlled at 1250 DEG C as 25min, and soaking zone is controlled at 1220 DEG C, soaking
Control time section time is 3h, and 1210 DEG C of tapping temperature, 220~240bar of high-pressure water descaler water pressure, is removed after steel billet is come out of the stove
Net iron oxide on surface of billet steel skin.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing, it is phosphorous easily
Small rolled bar base type is 230 sides in the production method of Cutting Steel, and 1200 DEG C of start rolling temperature, after high temperature rolls fastly, semifinished product flame is cut
Cut both ends.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing of preparation,
Performance parameter containing phosphorus easy cutting steel is as shown in table 3:
3 sulfur-bearing of table, the performance parameter contrast table containing phosphorus easy cutting steel
A kind of sulfur-bearing that a kind of sulfur-bearing described in present embodiment, the production method containing phosphorus easy cutting steel generate,
Containing phosphorus easy cutting steel, tensile strength 609N/mm2, elongation 19.2%, hardness reaches 181HB, and comprehensive performance is better than existing skill
Art.
Specific embodiment 4:
A kind of sulfur-bearing contains phosphorus easy cutting steel, and a kind of sulfur-bearing containing phosphorus easy cutting steel includes following component: 0.09~
The P of the Mn of the Si of the C of 0.12wt%, 0.20~0.25wt%, 0.85~0.90wt%, 0.10~0.14wt%, 0.13~
The Al of the S of 0.17wt%, 0.008~0.015wt%, surplus are iron, and the mass ratio of the Mn and S are 5.5~6.0:1.
Specific embodiment 5:
A kind of sulfur-bearing described in a kind of, the production method containing phosphorus easy cutting steel, a kind of sulfur-bearing contain phosphorus easy cutting steel
Production method production procedure are as follows: electric furnace smelting, LF furnace refining → soft blow, the hot sending of bull ladle → ingot steel casting → delay are covered cold
→ Heating Steel Ingots → steel ingot cogging → heap is cold, and → steel billet cleaning → flaw detection → heating steel billet → small rolling bar → heap is cold → is aligned
→ flaw detection → reconditioning → pointing → base fire → pickling → cold-drawn → polishing → inspection inspection → is submitted.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, in general, sulphur is having in steel
Evil element, it is indivisible impurity in steel-making.Sulphur solubility and small in solid iron, it can form low melting point with iron
The FeS of (1190 DEG C).The eutectiferous fusing point of FeS combination Fe is lower (989 DEG C).The eutectic of this low melting point is generally total with divorced
Brilliant formal distribution is on crystal boundary.When carrying out hot-working (forging, rolling) to steel, heating temperature often at 1000 DEG C or more, this
When crystal boundary on FeS+Fe eutectic melting, the cracking of steel when leading to hot-working.This phenomenon is known as " hot-short " or " red crisp " of steel.
Lower Fe, FeS, FeO eutectic of fusing point will be formed when the oxygen content of steel is high, keep hot-short tendency bigger.Institute prepared by the present invention
A kind of sulfur-bearing for stating, containing phosphorus easy cutting steel, steel " hot-short " and " cold short " phenomenon do not generate, steel surface flawless.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment utilize manganese and sulphur with manganese come desulfurization
Affinity it is bigger than iron and sulphur, preferentially form manganese sulfide, reduce iron sulfide.Manganese sulfide fusing point is high (1600 DEG C), has under high temperature
Certain plasticity will not be such that steel generates hot-short.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, it is relatively low in the mass fraction of carbon
Steel in, the intensity of steel is improved using phosphorus, phosphorus can also improve the corrosion resistance of steel in an atmosphere, guarantee obtain fine grain
Under conditions of tissue, the cold short of phosphorus is inhibited, and while tensile strength and yield strength improve, low-temperature flexibility still keeps institute
It is required that level.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, adjust suitable oxygen content and promote
MnS in steel is in spindle or elliposoidal, is conducive to improve cutting ability.However the oxygen content in automatic steel not gets over Gao Yue
Good, too high oxygen level will affect cc billet surface quality, generate rimhole, and oxide inclusion content height is unfavorable to wearing,
It finally also will affect properties of product.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment, a kind of sulfur-bearing of production,
Have cutting smooth containing phosphorus easy cutting steel, material is excellent, and processing is stablized, and metallographic structure is good, and chemical analysis is stable, deviation is small, no
The features such as easy damaged cutter；It is easy in lathe grinding, cutter life and production efficiency improve 40%；Substantially reduce production
Product cost；Workpiece surface finish after Vehicle Processing is good.
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel described in present embodiment solve easy compared with prior art
Cutting Steel " hot-short " and " cold short phenomenon " guarantee the machinability of steel simultaneously.Production cost drops compared with prior art
Low, 60 yuan/t, without vacuumizing, while machinability is good.
Specific embodiment 6:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
The mass fraction of C is 0.05~0.08wt% when electric furnace smelting in sulphur, the production method containing phosphorus easy cutting steel, and tapping temperature is
1600~1640 DEG C.
Specific embodiment 7:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
0.5m/t feeds aluminum steel when LF furnace refines in sulphur, the production method containing phosphorus easy cutting steel, and when precipitation desoxydation, middle manganese dosage is 5~
6kg/t, 1~1.5kg/t of aluminum shot, with silicon powder, carbon dust diffusive deoxidation, silicon powder dosage is 1~1.5kg/t, carbon dust dosage is 0.6~
0.8kg/t is used after mixing, the low basicity slag in, the quality of basic anhydride calcium oxide and acidic oxide silica
Than for 2~2.5:1, aluminum oxide content is 10%~15wt%, white slag 20~30min of refining time after reaching white slag, is pressed
It is 0.10~0.14wt% that specification requirement, which adjusts P ingredient,.
Specific embodiment 8:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
In sulphur, the production method containing phosphorus easy cutting steel soft blow by 100% rate of recovery feeding sulphur line adjust S ingredient to 0.13~
0.17wt%, then plus heat preserving agent carbonization rice husk 50~55kg/ furnace, 15~20min of soft blow, with top of the slag fine motion, not exposed molten steel
Subject to, 20~60ppm of oxygen content in steel.
Specific embodiment 9:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
1575~1580 DEG C of bull ladle temperature in sulphur, the production method containing phosphorus easy cutting steel.
Specific embodiment 10:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
Ingot steel casting ingot body infuses 300~400S of speed in sulphur, the production method containing phosphorus easy cutting steel, and riser infuses 240~300S of speed.
Specific embodiment 11:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
The heating one-stage control temperature of heating steel billet is 1000~1120 DEG C in sulphur, the production method containing phosphorus easy cutting steel, heats one section
The control time is 40~60min, heats two sections controlled at 1220~1260 DEG C, heat two control times for 25~
30min, for soaking zone controlled at 1210~1250 DEG C, it is 2~3h that the soaking zone time, which controls the time, tapping temperature 1210~
1250℃。
Specific embodiment 12:
A kind of sulfur-bearing, the production method containing phosphorus easy cutting steel according to specific embodiment five, described one kind contain
Small rolled bar base type is 230 sides in sulphur, the production method containing phosphorus easy cutting steel, and 1150~1250 DEG C of start rolling temperature, high temperature is fast
After rolling, semifinished product gas flame cuttiug both ends.
Claims (10)
1. a kind of sulfur-bearing contains phosphorus easy cutting steel, it is characterised in that: a kind of sulfur-bearing, containing phosphorus easy cutting steel include below at
Point: the P of the Mn of the Si of the C of 0.09~0.12wt%, 0.20~0.25wt%, 0.85~0.90wt%, 0.10~0.14wt%,
The Al of the S of 0.13~0.17wt%, 0.008~0.015wt%, surplus are iron, the mass ratio of the Mn and S is 5.5~
6.0:1.
2. a kind of sulfur-bearing according to claim 1 contains phosphorus easy cutting steel, it is characterised in that: a kind of sulfur-bearing, phosphorous
Automatic steel includes following component: the P of the Mn of the Si of the C of 0.11wt%, 0.22wt%, 0.86wt%, 0.13wt%,
The Al of the S of 0.15wt%, 0.011wt%, surplus are iron, and the mass ratio of the Mn and S are 5.73:1.
3. a kind of a kind of sulfur-bearing claimed in claims 1-2, the production method containing phosphorus easy cutting steel, it is characterised in that: described
The production procedure of a kind of sulfur-bearing, production method containing phosphorus easy cutting steel are as follows: electric furnace smelting, LF furnace refining → soft blow, bull ladle → steel
Ingot casting → delay hot sending or cover cold → Heating Steel Ingots → steel ingot cogging → heap it is cold → steel billet cleaning → flaw detection → heating steel billet →
Small rolling bar → heap is cold → and aligning → flaw detection → reconditioning → pointing → base fire → pickling → cold-drawn → polishing → inspection inspection →
It submits.
4. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
The mass fraction of C is 0.05~0.08wt%, tapping temperature when electric furnace smelting in kind sulfur-bearing, the production method containing phosphorus easy cutting steel
It is 1600~1640 DEG C.
5. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
0.5m/t feeds aluminum steel when the refining of LF furnace in kind of sulfur-bearing, the production method containing phosphorus easy cutting steel, and when precipitation desoxydation, middle manganese dosage is
5~6kg/t, 1~1.5kg/t of aluminum shot, with silicon powder, carbon dust diffusive deoxidation, silicon powder dosage is 1~1.5kg/t, and carbon dust dosage is
0.6~0.8kg/t is used after mixing, the low basicity slag in, basic anhydride calcium oxide and acidic oxide silica
Mass ratio is 2~2.5:1, and aluminum oxide content is 10%~15wt%, and white slag 20~30min of refining time reaches white slag
It afterwards, is 0.10~0.14wt% by specification requirement adjustment P ingredient.
6. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
In kind of sulfur-bearing, the production method containing phosphorus easy cutting steel soft blow by 100% rate of recovery feeding sulphur line adjust S ingredient to 0.13~
0.17wt%, then plus heat preserving agent carbonization rice husk 50~55kg/ furnace, 15~20min of soft blow, with top of the slag fine motion, not exposed molten steel
Subject to, 20~60ppm of oxygen content in steel.
7. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
1575~1580 DEG C of bull ladle temperature in kind sulfur-bearing, the production method containing phosphorus easy cutting steel.
8. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
Ingot steel casting ingot body infuses 300~400S of speed in kind sulfur-bearing, the production method containing phosphorus easy cutting steel, and riser infuses 240~300S of speed.
9. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
The heating one-stage control temperature of heating steel billet is 1000~1120 DEG C in kind sulfur-bearing, the production method containing phosphorus easy cutting steel, heating
The one-stage control time is 40~60min, heats two sections controlled at 1220~1260 DEG C, heat two control times for 25~
30min, for soaking zone controlled at 1210~1250 DEG C, it is 2~3h that the soaking zone time, which controls the time, tapping temperature 1210~
1250 DEG C, 220~240bar of high-pressure water descaler water pressure after steel billet is come out of the stove, cleared iron oxide on surface of billet steel skin.
10. a kind of sulfur-bearing according to claim 3, the production method containing phosphorus easy cutting steel, it is characterised in that: described one
Small rolled bar base type is 230 sides in kind sulfur-bearing, the production method containing phosphorus easy cutting steel, 1150~1250 DEG C of start rolling temperature, high
After temperature is rolled fastly, semifinished product gas flame cuttiug both ends.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904395A (en) * | 2019-12-17 | 2020-03-24 | 芜湖新兴铸管有限责任公司 | Sulfur-containing free-cutting steel and smelting method thereof |
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