CN105113713A - Rib reinforcement prefabricated part - Google Patents
Rib reinforcement prefabricated part Download PDFInfo
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- CN105113713A CN105113713A CN201510506712.5A CN201510506712A CN105113713A CN 105113713 A CN105113713 A CN 105113713A CN 201510506712 A CN201510506712 A CN 201510506712A CN 105113713 A CN105113713 A CN 105113713A
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Abstract
The invention discloses a rib reinforcement prefabricated part. The rib reinforcement prefabricated part comprises rectangular steel pipes at the outer periphery, wherein cross ribs are welded on the inner walls of the steel pipes; the ribs are formed by welding two reinforcements; and concrete is filled in the steel pipes. The cross ribs effectively enhance the strength of the prefabricated part, and enable the product structural performance to be excellent; and the rectangular steel pipes at the outer periphery of the rib reinforcement prefabricated part can preferably guarantee the product bearing capacity.
Description
Technical field
The present invention relates to an effective reinforcement rib and strengthens prefabricated component, belongs to building field of civil engineering.
Background technology
Concrete component precasting process is the technique of the concrete member of processing and fabricating building or structure in advance in factory or building site.Adopt precast unit to carry out prefabricated construction, there is saving labour, overcome seasonal effect, be convenient to the advantages such as construction throughout the year.Promoting the use of precast unit, is one of important channel realizing industrialization of construction industry.
Summary of the invention
One effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.1-0.2wt%, Al3-4wt%, Zn1-2wt%, Ni0.8-0.9wt%, V0.3-0.4wt%, Bi0.1-0.2wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, be roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, last finish to gauge 40 seconds under speed is the rolling condition of 4.4m/s, then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature, the reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.3-0.4 ﹪, Zn:6-7 ﹪, Cu:3-4 ﹪, Mg:1-2 ﹪, Ni:0.8-0.9 ﹪, W:0.5-0.6 ﹪, Cr:0.4-0.5 ﹪, Al:0.1-0.2 ﹪, Ti:0.07-0.08 ﹪, Mo:0.06-0.07 ﹪, V:0.03-0.04 ﹪, Si:0.02-0.03 ﹪, Sn:0.02-0.03 ﹪, Pr:0.01-0.02 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1050-1100 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.5-0.7mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
A described effective reinforcement rib strengthens prefabricated component, and the manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.1wt%, Al3wt%, Zn1wt%, Ni0.8wt%, V0.3wt%, Bi0.1wt%, and all the other are Fe and inevitable impurity.
A described effective reinforcement rib strengthens prefabricated component, and the manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.2wt%, Al4wt%, Zn2wt%, Ni0.9wt%, V0.4wt%, Bi0.2wt%, and all the other are Fe and inevitable impurity.
A described effective reinforcement rib strengthens prefabricated component, the manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.15wt%, Al3.5wt%, Zn1.5wt%, Ni0.85wt%, V0.35wt%, Bi0.15wt%, and all the other are Fe and inevitable impurity.
A described effective reinforcement rib strengthens prefabricated component, and rectangular steel pipe chemical element consists of (percentage by weight): C:0.3 ﹪, Zn:6 ﹪, Cu:3 ﹪, Mg:1 ﹪, Ni:0.8 ﹪, W:0.5 ﹪, Cr:0.4 ﹪, Al:0.1 ﹪, Ti:0.07 ﹪, Mo:0.06 ﹪, V:0.03 ﹪, Si:0.02 ﹪, Sn:0.02 ﹪, Pr:0.01 ﹪, surplus is Fe and inevitable impurity.
A described effective reinforcement rib strengthens prefabricated component, and rectangular steel pipe chemical element consists of (percentage by weight): C:0.4 ﹪, Zn:7 ﹪, Cu:4 ﹪, Mg:2 ﹪, Ni:0.9 ﹪, W:0.6 ﹪, Cr:0.5 ﹪, Al:0.2 ﹪, Ti:0.08 ﹪, Mo:0.07 ﹪, V:0.04 ﹪, Si:0.03 ﹪, Sn:0.03 ﹪, Pr:0.02 ﹪, surplus is Fe and inevitable impurity.
A described effective reinforcement rib strengthens prefabricated component, and rectangular steel pipe chemical element consists of (percentage by weight): C:0.35 ﹪, Zn:6.5 ﹪, Cu:3.5 ﹪, Mg:1.5 ﹪, Ni:0.85 ﹪, W:0.55 ﹪, Cr:0.45 ﹪, Al:0.15 ﹪, Ti:0.075 ﹪, Mo:0.065 ﹪, V:0.035 ﹪, Si:0.025 ﹪, Sn:0.025 ﹪, Pr:0.015 ﹪, surplus is Fe and inevitable impurity.
A described effective reinforcement rib strengthens prefabricated component, the ingot casting of gained is heated to 1050 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe.
A described effective reinforcement rib strengthens prefabricated component, the ingot casting of gained is heated to 1100 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe.
A described effective reinforcement rib strengthens prefabricated component, the ingot casting of gained is heated to 1070 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe.
One effective reinforcement rib strengthens prefabricated component manufacture method, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.1-0.2wt%, Al3-4wt%, Zn1-2wt%, Ni0.8-0.9wt%, V0.3-0.4wt%, Bi0.1-0.2wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, be roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, last finish to gauge 40 seconds under speed is the rolling condition of 4.4m/s, then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature, the reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.3-0.4 ﹪, Zn:6-7 ﹪, Cu:3-4 ﹪, Mg:1-2 ﹪, Ni:0.8-0.9 ﹪, W:0.5-0.6 ﹪, Cr:0.4-0.5 ﹪, Al:0.1-0.2 ﹪, Ti:0.07-0.08 ﹪, Mo:0.06-0.07 ﹪, V:0.03-0.04 ﹪, Si:0.02-0.03 ﹪, Sn:0.02-0.03 ﹪, Pr:0.01-0.02 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1050-1100 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.5-0.7mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, concrete is obtained after stirring
Concrete is filled in rectangular steel pipe by pouring type.
Foregoing invention content is relative to the beneficial effect of prior art: 1) cross-rib rib of the present invention effectively enhances the intensity of prefabricated component and makes product structure functional, 2) rectangular steel pipe that muscle rib of the present invention strengthens prefabricated component periphery can better ensure product holding capacity; 3) ferrous alloy material fully meets the external intensity requirement of product of the present invention, can also suppress concrete expansion, 4) concrete material of the present invention select multiple batch mixing form compressive strength reach: 7d:30MPa; 28d:49MPa; 5) cross-rib rib manufacturing process is simply applicable to industrial production.
Accompanying drawing explanation
Fig. 1 is prefabricated component overall schematic;
Fig. 2 is prefabricated component schematic cross-section.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now describe the specific embodiment of the present invention in detail.
An effective reinforcement rib strengthens prefabricated component 4 as depicted in figs. 1 and 2, and the rectangular steel pipe 1, the steel pipe inner wall that comprise periphery are welded with cross-rib rib 3, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete 2.
Cross-rib rib is welded into crosswise by ferrous alloy bar, is integrally welded on steel pipe inner wall and forms cross-rib rib, and can be arranged in parallel along steel pipe body direction many group cross-rib ribs, 8cm of being often separated by between group cross-rib rib.
Concrete is filled in rectangular steel pipe by pouring type.
Embodiment 1
One effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.1wt%, Al3wt%, Zn1wt%, Ni0.8wt%, V0.3wt%, Bi0.1wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, being roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, is finally finish to gauge 40 seconds under the rolling condition of 4.4m/s in speed; Then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature; The reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.3 ﹪, Zn:6 ﹪, Cu:3 ﹪, Mg:1 ﹪, Ni:0.8 ﹪, W:0.5 ﹪, Cr:0.4 ﹪, Al:0.1 ﹪, Ti:0.07 ﹪, Mo:0.06 ﹪, V:0.03 ﹪, Si:0.02 ﹪, Sn:0.02 ﹪, Pr:0.01 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1050 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.5mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
Embodiment 2
One effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.2wt%, Al4wt%, Zn2wt%, Ni0.9wt%, V0.4wt%, Bi0.2wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, being roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, is finally finish to gauge 40 seconds under the rolling condition of 4.4m/s in speed; Then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature; The reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.4 ﹪, Zn:7 ﹪, Cu:4 ﹪, Mg:2 ﹪, Ni:0.9 ﹪, W:0.6 ﹪, Cr:0.5 ﹪, Al:0.2 ﹪, Ti:0.08 ﹪, Mo:0.07 ﹪, V:0.04 ﹪, Si:0.03 ﹪, Sn:0.03 ﹪, Pr:0.02 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1100 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.7mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
Embodiment 3
One effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.15wt%, Al3.5wt%, Zn1.5wt%, Ni0.85wt%, V0.35wt%, Bi0.15wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, be roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, last finish to gauge 40 seconds under speed is the rolling condition of 4.4m/s, then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature, the reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.35 ﹪, Zn:6.5 ﹪, Cu:3.5 ﹪, Mg:1.5 ﹪, Ni:0.85 ﹪, W:0.55 ﹪, Cr:0.45 ﹪, Al:0.15 ﹪, Ti:0.075 ﹪, Mo:0.065 ﹪, V:0.035 ﹪, Si:0.025 ﹪, Sn:0.025 ﹪, Pr:0.015 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1070 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.6mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
Embodiment 4
One effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.12wt%, Al3.3wt%, Zn1.3wt%, Ni0.84wt%, V0.34wt%, Bi0.13wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, be roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, last finish to gauge 40 seconds under speed is the rolling condition of 4.4m/s, then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature, the reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.32 ﹪, Zn:6.1 ﹪, Cu:3.2 ﹪, Mg:1.3 ﹪, Ni:0.83 ﹪, W:0.53 ﹪, Cr:0.44 ﹪, Al:0.13 ﹪, Ti:0.072 ﹪, Mo:0.063 ﹪, V:0.031 ﹪, Si:0.021 ﹪, Sn:0.023 ﹪, Pr:0.012 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1060 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.52mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
Embodiment 5
One effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.17wt%, Al3.8wt%, Zn1.7wt%, Ni0.86wt%, V0.37wt%, Bi0.18wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, be roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, last finish to gauge 40 seconds under speed is the rolling condition of 4.4m/s, then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature, the reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.36 ﹪, Zn:6.7 ﹪, Cu:3.8 ﹪, Mg:1.7 ﹪, Ni:0.89 ﹪, W:0.58 ﹪, Cr:0.47 ﹪, Al:0.16 ﹪, Ti:0.077 ﹪, Mo:0.068 ﹪, V:0.037 ﹪, Si:0.028 ﹪, Sn:0.029 ﹪, Pr:0.017 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1090 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.67mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
Claims (10)
1. an effective reinforcement rib strengthens prefabricated component, and the rectangular steel pipe, the steel pipe inner wall that comprise periphery are welded with cross-rib rib, and muscle rib is formed by two reinforcement welding, and steel duct is filled with concrete,
The manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.1-0.2wt%, Al3-4wt%, Zn1-2wt%, Ni0.8-0.9wt%, V0.3-0.4wt%, Bi0.1-0.2wt%, all the other are Fe and inevitable impurity, steel billet is cast into after carrying out melting, afterwards by heating steel billet to 1120 DEG C, it is breaking down 100 seconds under the rolling condition of 1.5m/s in speed, be roll 80 seconds in first time under the rolling condition of 2.3m/s afterwards in speed, be roll 65 seconds in second time under the rolling condition of 3.4m/s afterwards in speed, last finish to gauge 40 seconds under speed is the rolling condition of 4.4m/s, then enter the interior water of quenching unit to quench, be cooled to 430 DEG C, then enter in tempering heating furnace and be heated to 590 DEG C and carry out tempering, then water-cooled is first adopted with the cooldown rate of 15 DEG C/s by reinforcing bar water-cooled to 400 DEG C, then 60 seconds are incubated, adopt water-cooled again with the cooldown rate of 20 DEG C/s by reinforcing bar water-cooled to 220 DEG C, last air cooling is to room temperature, the reinforcing bar obtained cuts according to dimensional requirement, is welded into cross afterwards,
Rectangular steel pipe chemical element consists of (percentage by weight): C:0.3-0.4 ﹪, Zn:6-7 ﹪, Cu:3-4 ﹪, Mg:1-2 ﹪, Ni:0.8-0.9 ﹪, W:0.5-0.6 ﹪, Cr:0.4-0.5 ﹪, Al:0.1-0.2 ﹪, Ti:0.07-0.08 ﹪, Mo:0.06-0.07 ﹪, V:0.03-0.04 ﹪, Si:0.02-0.03 ﹪, Sn:0.02-0.03 ﹪, Pr:0.01-0.02 ﹪, surplus is Fe and inevitable impurity;
The preparation method of rectangular steel pipe: comprise the following steps: according to above-mentioned rectangular steel pipe element composition batching, first pure iron is joined in smelting furnace, Control for Kiln Temperature is at 1450 DEG C, after pure iron fusing, furnace temperature drops to 1440 DEG C and adds zinc-iron intermediate alloy, after furnace temperature be reduced to 1430 DEG C add copper iron intermediate alloy; After furnace temperature be reduced to 1420 DEG C add magnesium iron intermediate alloy; After furnace temperature be reduced to 1410 DEG C add other alloying elements, rear furnace temperature is elevated to 1430 DEG C, add refining cleanser, refining cleanser addition is 0.6% of furnace charge amount, stirs 10 minutes, leave standstill 20 minutes, treat that slag is separated with molten metal, skim, after add coverture, leave standstill and again skim after 30 minutes, pour into a mould afterwards; Pouring temperature is 1400 DEG C; The ingot casting obtained is heat-treated: first carried out being heated to 800 DEG C by ingot casting, heating rate 80 DEG C/h, is incubated 3 hours, carry out Quenching Treatment afterwards, hardening media is water, after quenching, ingot casting is heated to 600 DEG C from room temperature, heating rate 60 DEG C/h, is incubated 5 hours, after be cooled to 400 DEG C, rate of temperature fall 50 DEG C/h, is incubated 3 hours, after be again cooled to 300 DEG C, rate of temperature fall 50 DEG C/h, be incubated 3 hours, rear air cooling is to room temperature
The ingot casting of gained is heated to 1050-1100 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe,
The original pipe of gained carries out multistage annealing, is first warming up to 750 DEG C, heating rate 150 DEG C/h, is incubated 2 hours, after be cooled to 550 DEG C, rate of temperature fall 70 DEG C/h, be incubated 4 hours, after be again cooled to 400 DEG C, be incubated 3 hours, rear air cooling to room temperature,
Original pipe after annealing carries out cold rolling, obtains pipe idiosome
Coordinated by rectangle rectification mould and plug by pipe idiosome and obtain rectangular steel pipe through four drawings, the drawing temperature of first time drawing is 850 DEG C, and drawing speed is 6 mm/second; The drawing temperature of second time drawing is 820 DEG C, and drawing speed is 8 mm/second; The drawing temperature of third time drawing is 800 DEG C, and drawing speed is 10 mm/second; The drawing temperature of the 4th drawing is 780 DEG C, and drawing speed is 12 mm/second, obtains final rectangular steel pipe,
Concrete preparation method is: take raw material (weight portion): cement 400 parts, feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, sepiolite powder 5 parts, 600 parts, sand, 1200 parts, stone, 275 parts, water, slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea;
By feldspar powder 10 parts, 10 parts, flyash, dolomite dust 5 parts, chromite 5 parts, calcining after sepiolite powder 5 parts mixing, calcination process: be first heated to 500 DEG C, calcine 2 hours, be warming up to 650 DEG C afterwards, calcine 3 hours, again be warming up to 750 DEG C, calcine 1 hour, cool with stove afterwards, mixture after calcining is carried out grinding in flour mill, and rotating speed is 100r/min, grinding 3 hours, grinding compound particles granularity size is 0.5-0.7mm
Cement, grinding mixture and 125ml water are put into concrete mixer and stirs 5 minutes, add sand, stone and remaining water again and continue stirring 4 minutes, afterwards by slag fiber 4 parts, sulfonated melamine compound resin 5 parts, sodium alkyl benzene sulfonate 3 parts, gluconic acid sodium salt 2 parts, sodium pyrophosphate 2 parts, 2.5 parts, calcium nitrate, 2.5 parts, urea add, and obtain concrete after stirring.
2. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, the manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.1wt%, Al3wt%, Zn1wt%, Ni0.8wt%, V0.3wt%, Bi0.1wt%, and all the other are Fe and inevitable impurity.
3. an effective reinforcement rib as claimed in claim 3 strengthens prefabricated component, the manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.2wt%, Al4wt%, Zn2wt%, Ni0.9wt%, V0.4wt%, Bi0.2wt%, and all the other are Fe and inevitable impurity.
4. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, the manufacture method of cross-rib rib is: prepare burden according to following chemical composition: C0.15wt%, Al3.5wt%, Zn1.5wt%, Ni0.85wt%, V0.35wt%, Bi0.15wt%, and all the other are Fe and inevitable impurity.
5. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, and rectangular steel pipe chemical element consists of (percentage by weight): C:0.3 ﹪, Zn:6 ﹪, Cu:3 ﹪, Mg:1 ﹪, Ni:0.8 ﹪, W:0.5 ﹪, Cr:0.4 ﹪, Al:0.1 ﹪, Ti:0.07 ﹪, Mo:0.06 ﹪, V:0.03 ﹪, Si:0.02 ﹪, Sn:0.02 ﹪, Pr:0.01 ﹪, surplus is Fe and inevitable impurity.
6. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, and rectangular steel pipe chemical element consists of (percentage by weight): C:0.4 ﹪, Zn:7 ﹪, Cu:4 ﹪, Mg:2 ﹪, Ni:0.9 ﹪, W:0.6 ﹪, Cr:0.5 ﹪, Al:0.2 ﹪, Ti:0.08 ﹪, Mo:0.07 ﹪, V:0.04 ﹪, Si:0.03 ﹪, Sn:0.03 ﹪, Pr:0.02 ﹪, surplus is Fe and inevitable impurity.
7. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, and rectangular steel pipe chemical element consists of (percentage by weight): C:0.35 ﹪, Zn:6.5 ﹪, Cu:3.5 ﹪, Mg:1.5 ﹪, Ni:0.85 ﹪, W:0.55 ﹪, Cr:0.45 ﹪, Al:0.15 ﹪, Ti:0.075 ﹪, Mo:0.065 ﹪, V:0.035 ﹪, Si:0.025 ﹪, Sn:0.025 ﹪, Pr:0.015 ﹪, surplus is Fe and inevitable impurity.
8. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, the ingot casting of gained is heated to 1050 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe.
9. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, the ingot casting of gained is heated to 1100 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe.
10. an effective reinforcement rib as claimed in claim 1 strengthens prefabricated component, the ingot casting of gained is heated to 1070 DEG C, Extrusion Porthole Die for Aluminium Profiles tool carries out hot extrusion and obtains original pipe.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111469477A (en) * | 2020-04-13 | 2020-07-31 | 马喜园 | Method and system for preparing environment-friendly bricks by using construction wastes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111469477A (en) * | 2020-04-13 | 2020-07-31 | 马喜园 | Method and system for preparing environment-friendly bricks by using construction wastes |
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Application publication date: 20151202 |