CN106399814A - Heat treatment method for phosphor-copper-titanium abrasion-resistant cast iron - Google Patents
Heat treatment method for phosphor-copper-titanium abrasion-resistant cast iron Download PDFInfo
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- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- TYERLDDAUPZLHU-UHFFFAOYSA-N [Ti].[Cu].[P] Chemical compound [Ti].[Cu].[P] TYERLDDAUPZLHU-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005299 abrasion Methods 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000005266 casting Methods 0.000 claims abstract description 18
- 238000011081 inoculation Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003723 Smelting Methods 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 16
- 229910000805 Pig iron Inorganic materials 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 15
- 239000002054 inoculum Substances 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 13
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 10
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 5
- 239000010436 fluorite Substances 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 239000011574 phosphorus Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
本发明公开了一种磷铜钛耐磨铸铁的热处理方法，所述的磷铜钛耐磨铸铁其成分的重量百分比为C2.9～3.3%、Si1.4～1.7%、Mn0.6～1%、P0.4～0.7%、Cu0.5～0.9%、Ti0.2～0.16%、S≤0.10%，余量为Fe。所述的方法包括配料、预热、熔炼、炉前快速分析、终脱氧、孕育处理、浇注、高温退火。该方法简单，通过严格控制磷、铜和钛的加入量，其耐磨性比HT300牌号铸铁高1.5倍，机械性能可达HT250牌号，同时改善机械性能及切削加工性能，特别适合铸造座标镗床床身。The invention discloses a heat treatment method of phosphorus copper titanium wear-resistant cast iron, the composition weight percentage of the phosphorus copper titanium wear-resistant cast iron is C2.9-3.3%, Si1.4-1.7%, Mn0.6-1 %, P0.4～0.7%, Cu0.5～0.9%, Ti0.2～0.16%, S≤0.10%, and the balance is Fe. The method includes batching, preheating, smelting, rapid analysis before furnace, final deoxidation, inoculation treatment, pouring and high temperature annealing. The method is simple, by strictly controlling the addition of phosphorus, copper and titanium, its wear resistance is 1.5 times higher than that of HT300 grade cast iron, and its mechanical properties can reach HT250 grade, while improving mechanical properties and cutting performance, especially suitable for casting jig boring machines bed frame.
Description
技术领域technical field
本发明涉及黑色金属的生产技术领域，尤其是一种磷铜钛耐磨铸铁的热处理方法。The invention relates to the technical field of ferrous metal production, in particular to a heat treatment method for phosphorus copper titanium wear-resistant cast iron.
背景技术Background technique
磷铜钛耐磨铸铁是一种性能优良的减磨材料，它具有很高的硬度和延长铸件的使用寿命的特点。磷铜钛铸铁只需在含磷铸铁中加入铜和少量钛，铜能促使形成并细化珠光体，从而提髙铸铁强度、硬度以及耐磨性，钛促使石墨细化，又由于钛可与碳、氮形成高硬度的化合物质点，因而可提高铸铁的耐磨性。另外为了消除自由渗碳体，降低硬度，改善机械性能及切削加工性能，需进行高温退火处理。Phosphor bronze titanium wear-resistant cast iron is an excellent wear-reducing material, which has the characteristics of high hardness and prolonging the service life of castings. Phosphor-bronze-titanium cast iron only needs to add copper and a small amount of titanium to phosphorus-containing cast iron. Copper can promote the formation and refinement of pearlite, thereby improving the strength, hardness and wear resistance of cast iron. Titanium promotes the refinement of graphite, and because titanium can be combined with Carbon and nitrogen form high-hardness compound particles, which can improve the wear resistance of cast iron. In addition, in order to eliminate free cementite, reduce hardness, improve mechanical properties and cutting performance, high temperature annealing treatment is required.
发明内容Contents of the invention
本发明所需解决的技术问题是提供一种磷铜钛耐磨铸铁的热处理方法。通过控制铸铁中磷、铜和钛的加入量，铸造出耐磨铸铁，并进行高温退火改善机械性能及切削加工性能。The technical problem to be solved by the present invention is to provide a heat treatment method for phosphorus copper titanium wear-resistant cast iron. By controlling the addition of phosphorus, copper and titanium in cast iron, cast wear-resistant cast iron, and perform high-temperature annealing to improve mechanical properties and cutting performance.
本发明解决其技术问题所采用的技术方案是：包括下述几个步骤：The technical scheme that the present invention solves its technical problem adopts is: comprise following several steps:
第一步：配料：将废钢、回炉料、生铁、锰铁、硅铁按C2.9～3.3%、Si1.4～1.7%、Mn0.6～1%、P0.4～0.7%、Cu0.5～0.9%、Ti0.1～0.16%、S≤0.10%，余量为Fe重量百分比的方式进行配料；The first step: ingredients: steel scrap, recycled material, pig iron, ferromanganese, ferrosilicon according to C2.9~3.3%, Si1.4~1.7%, Mn0.6~1%, P0.4~0.7%, Cu0. 5～0.9%, Ti0.1～0.16%, S≤0.10%, and the balance is Fe weight percentage;
第二步：预热：将优化计算好的废钢、回炉料、生铁投入中频感应炉内进行预热；Step 2: Preheating: Put the optimized calculated steel scrap, recycled material and pig iron into the medium frequency induction furnace for preheating;
第三步：熔炼：将中频感应炉内的废钢、回炉料、生铁熔化后，投入其数量为炉料18～25%，成分为石灰70%+萤石30%的脱氧剂进行预脱氧，再投入烘烤处理的锰铁和硅铁得到铁液；The third step: smelting: After melting the steel scrap, recycled material, and pig iron in the intermediate frequency induction furnace, put in a deoxidizer whose amount is 18-25% of the furnace charge, and whose composition is 70% lime + 30% fluorite for pre-deoxidation, and then put in Ferromanganese and ferrosilicon processed by baking to obtain molten iron;
第四步：炉前快速分析：取铁液浇注试样进行快速分析，根据分析结果调整化学成分；Step 4: Quick analysis before the furnace: Take the molten iron pouring sample for quick analysis, and adjust the chemical composition according to the analysis results;
第五步：终脱氧：将铁液温度升温至1480～1600℃，投入其数量为铁液0.1～0.3%的铝进行终脱氧；Step 5: Final deoxidation: raise the temperature of the molten iron to 1480-1600°C, and put in 0.1-0.3% aluminum in the molten iron for final deoxidation;
第六步：孕育处理：铁液自中频感应炉流向浇包时进行孕育处理，加入其数量为铁液量的0.3～0.5%孕育剂，孕育剂的粒度为2～6mm，孕育剂为75硅铁；Step 6: Inoculation treatment: Inoculation treatment is carried out when the molten iron flows from the intermediate frequency induction furnace to the ladle, adding an inoculant whose amount is 0.3-0.5% of the molten iron, the particle size of the inoculant is 2-6 mm, and the inoculant is 75 silicon iron;
第七步：浇注：待铁液温度降至1400～1480℃时，进行浇注，得到铸件；Step 7: pouring: when the temperature of molten iron drops to 1400-1480°C, pouring is carried out to obtain castings;
第八步：高温退火。The eighth step: high temperature annealing.
所述的第八步高温退火中，铸件﹤200℃以下装入热处理炉中，以50～90℃／h的速度升温至780～830℃，保温1～3h进行快速冷却至550℃时，再将铸件放入热处理炉以40～80℃／h的速度冷至300℃以下出炉空冷，得到磷铜钛耐磨铸铁。In the eighth step of high-temperature annealing, the casting is loaded into a heat treatment furnace below 200°C, heated to 780-830°C at a rate of 50-90°C/h, kept for 1-3 hours and rapidly cooled to 550°C, and then The casting is put into a heat treatment furnace and cooled at a rate of 40-80°C/h to below 300°C, and then air-cooled to obtain phosphorus copper titanium wear-resistant cast iron.
本发明的有益效果是：方法简单，通过严格控制磷、铜和钛的加入量，其耐磨性比HT300牌号铸铁高1.5倍，机械性能可达HT250牌号，同时改善机械性能及切削加工性能，特别适合铸造座标镗床床身。The beneficial effect of the present invention is: the method is simple, by strictly controlling the addition of phosphorus, copper and titanium, its wear resistance is 1.5 times higher than that of HT300 brand cast iron, and its mechanical properties can reach HT250 brand, while improving mechanical properties and cutting performance, Especially suitable for casting coordinate boring machine bed.
具体实施方式detailed description
实施例1：Example 1:
本例的一种磷铜钛耐磨铸铁的热处理方法，包括下述几个步骤：A kind of heat treatment method of phosphorus copper titanium wear-resistant cast iron of this example, comprises following several steps:
第一步：配料：将废钢、回炉料、生铁、锰铁、硅铁按C2.9%、Si1.4%、Mn0.6%、P0.4%、Cu0.5%、Ti0.1%、S≤0.10%，余量为Fe重量百分比的方式进行配料；The first step: ingredients: steel scrap, recycled material, pig iron, ferromanganese, ferrosilicon according to C2.9%, Si1.4%, Mn0.6%, P0.4%, Cu0.5%, Ti0.1%, S≤0.10%, and the balance is Fe weight percentage for batching;
第二步：预热：将优化计算好的废钢、回炉料、生铁投入中频感应炉内进行预热；Step 2: Preheating: Put the optimized calculated steel scrap, recycled material and pig iron into the medium frequency induction furnace for preheating;
第三步：熔炼：将中频感应炉内的废钢、回炉料、生铁熔化后，投入其数量为炉料18%，成分为石灰70%+萤石30%的脱氧剂进行预脱氧，再投入烘烤处理的锰铁和硅铁得到铁液；The third step: smelting: After melting the steel scrap, recycled materials, and pig iron in the intermediate frequency induction furnace, put in a deoxidizer whose amount is 18% of the furnace charge, and whose composition is 70% of lime + 30% of fluorite for pre-deoxidation, and then put into baking Treated ferromanganese and ferrosilicon to obtain molten iron;
第四步：炉前快速分析：取铁液浇注试样进行快速分析，根据分析结果调整化学成分；Step 4: Quick analysis before the furnace: Take the molten iron pouring sample for quick analysis, and adjust the chemical composition according to the analysis results;
第五步：终脱氧：将铁液温度升温至1480℃，投入其数量为铁液0.1%的铝进行终脱氧；Step 5: Final deoxidation: raise the temperature of the molten iron to 1480°C, and put in aluminum whose amount is 0.1% of the molten iron for final deoxidation;
第六步：孕育处理：铁液自中频感应炉流向浇包时进行孕育处理，加入其数量为铁液量的0.3%孕育剂，孕育剂的粒度为2mm，孕育剂为75硅铁；Step 6: Inoculation treatment: Inoculation treatment is carried out when the molten iron flows from the intermediate frequency induction furnace to the ladle, adding an inoculant whose amount is 0.3% of the molten iron, the particle size of the inoculant is 2 mm, and the inoculant is 75 ferrosilicon;
第七步：浇注：待铁液温度降至1400℃时，进行浇注，得到铸件；The seventh step: pouring: when the temperature of molten iron drops to 1400°C, pouring is carried out to obtain castings;
第八步：高温退火：铸件﹤200℃以下装入热处理炉中，以50℃／h的速度升温至780℃，保温1h进行快速冷却至550℃时，再将铸件放入热处理炉以40℃／h的速度冷至300℃以下出炉空冷，得到磷铜钛耐磨铸铁。Step 8: High-temperature annealing: Put the casting into the heat treatment furnace below 200°C, raise the temperature to 780°C at a rate of 50°C/h, keep it for 1 hour and quickly cool it to 550°C, then put the casting into the heat treatment furnace at 40°C /h speed cooling to below 300 ℃ out of the furnace and air cooling to obtain phosphorus copper titanium wear-resistant cast iron.
实施例2：Example 2:
本例的一种磷铜钛耐磨铸铁的热处理方法，包括下述几个步骤：A kind of heat treatment method of phosphorus copper titanium wear-resistant cast iron of this example, comprises following several steps:
第一步：配料：将废钢、回炉料、生铁、锰铁、硅铁按C3.1%、Si1.55%、Mn0.8%、P0.55%、Cu0.7%、Ti0.13%、S≤0.10%，余量为Fe重量百分比的方式进行配料；The first step: ingredients: steel scrap, recycled materials, pig iron, ferromanganese, ferrosilicon according to C3.1%, Si1.55%, Mn0.8%, P0.55%, Cu0.7%, Ti0.13%, S≤0.10%, and the balance is Fe weight percentage for batching;
第二步：预热：将优化计算好的废钢、回炉料、生铁投入中频感应炉内进行预热；Step 2: Preheating: Put the optimized calculated steel scrap, recycled material and pig iron into the medium frequency induction furnace for preheating;
第三步：熔炼：将中频感应炉内的废钢、回炉料、生铁熔化后，投入其数量为炉料21%，成分为石灰70%+萤石30%的脱氧剂进行预脱氧，再投入烘烤处理的锰铁和硅铁得到铁液；The third step: smelting: After melting the scrap steel, recycled materials, and pig iron in the intermediate frequency induction furnace, put in a deoxidizer whose amount is 21% of the furnace charge, and whose composition is 70% lime + 30% fluorite for pre-deoxidation, and then put into baking Treated ferromanganese and ferrosilicon to obtain molten iron;
第四步：炉前快速分析：取铁液浇注试样进行快速分析，根据分析结果调整化学成分；Step 4: Quick analysis before the furnace: Take the molten iron pouring sample for quick analysis, and adjust the chemical composition according to the analysis results;
第五步：终脱氧：将铁液温度升温至1540℃，投入其数量为铁液0.2%的铝进行终脱氧；Step 5: Final deoxidation: raise the temperature of the molten iron to 1540°C, and put in aluminum whose amount is 0.2% of the molten iron for final deoxidation;
第六步：孕育处理：铁液自中频感应炉流向浇包时进行孕育处理，加入其数量为铁液量的0.4%孕育剂，孕育剂的粒度为4mm，孕育剂为75硅铁；Step 6: Inoculation treatment: Inoculation treatment is carried out when the molten iron flows from the intermediate frequency induction furnace to the ladle, adding an inoculant whose amount is 0.4% of the molten iron, the particle size of the inoculant is 4 mm, and the inoculant is 75 ferrosilicon;
第七步：浇注：待铁液温度降至1440℃时，进行浇注，得到铸件；Step 7: pouring: when the temperature of molten iron drops to 1440°C, pouring is carried out to obtain castings;
第八步：高温退火：铸件﹤200℃以下装入热处理炉中，以70℃／h的速度升温至805℃，保温2h进行快速冷却至550℃时，再将铸件放入热处理炉以60℃／h的速度冷至300℃以下出炉空冷，得到磷铜钛耐磨铸铁。Step 8: High-temperature annealing: Put the casting into the heat treatment furnace below 200°C, raise the temperature to 805°C at a rate of 70°C/h, keep it warm for 2 hours and cool it rapidly to 550°C, then put the casting into the heat treatment furnace at 60°C /h speed cooling to below 300 ℃ out of the furnace and air cooling to obtain phosphorus copper titanium wear-resistant cast iron.
实施例3：Example 3:
本例的一种磷铜钛耐磨铸铁的热处理方法，包括下述几个步骤：A kind of heat treatment method of phosphorus copper titanium wear-resistant cast iron of this example, comprises following several steps:
第一步：配料：将废钢、回炉料、生铁、锰铁、硅铁按C3.3%、Si1.7%、Mn1%、P0.7%、Cu0.9%、Ti0.16%、S≤0.10%，余量为Fe重量百分比的方式进行配料；The first step: ingredients: steel scrap, recycled materials, pig iron, ferromanganese, ferrosilicon according to C3.3%, Si1.7%, Mn1%, P0.7%, Cu0.9%, Ti0.16%, S≤ 0.10%, and the balance is batched in the form of Fe weight percentage;
第二步：预热：将优化计算好的废钢、回炉料、生铁投入中频感应炉内进行预热；Step 2: Preheating: Put the optimized calculated steel scrap, recycled material and pig iron into the medium frequency induction furnace for preheating;
第三步：熔炼：将中频感应炉内的废钢、回炉料、生铁熔化后，投入其数量为炉料25%，成分为石灰70%+萤石30%的脱氧剂进行预脱氧，再投入烘烤处理的锰铁和硅铁得到铁液；The third step: smelting: After melting the steel scrap, recycled material, and pig iron in the intermediate frequency induction furnace, put in a deoxidizer whose amount is 25% of the furnace charge, and whose composition is 70% of lime + 30% of fluorite for pre-deoxidation, and then put into baking Treated ferromanganese and ferrosilicon to obtain molten iron;
第四步：炉前快速分析：取铁液浇注试样进行快速分析，根据分析结果调整化学成分；Step 4: Quick analysis before the furnace: Take the molten iron pouring sample for quick analysis, and adjust the chemical composition according to the analysis results;
第五步：终脱氧：将铁液温度升温至1600℃，投入其数量为铁液0.3%的铝进行终脱氧；Step 5: Final deoxidation: raise the temperature of molten iron to 1600°C, and put in aluminum whose amount is 0.3% of molten iron for final deoxidation;
第六步：孕育处理：铁液自中频感应炉流向浇包时进行孕育处理，加入其数量为铁液量的0.5%孕育剂，孕育剂的粒度为6mm，孕育剂为75硅铁；Step 6: Inoculation treatment: Inoculation treatment is carried out when the molten iron flows from the intermediate frequency induction furnace to the ladle, adding an inoculant whose amount is 0.5% of the molten iron, the particle size of the inoculant is 6 mm, and the inoculant is 75 ferrosilicon;
第七步：浇注：待铁液温度降至1480℃时，进行浇注，得到铸件；Step 7: pouring: when the temperature of molten iron drops to 1480°C, pouring is carried out to obtain castings;
第八步：高温退火：铸件﹤200℃以下装入热处理炉中，以90℃／h的速度升温至830℃，保温3h进行快速冷却至550℃时，再将铸件放入热处理炉以80℃／h的速度冷至300℃以下出炉空冷，得到磷铜钛耐磨铸铁。Step 8: High-temperature annealing: Put the casting into the heat treatment furnace below 200°C, raise the temperature to 830°C at a rate of 90°C/h, keep it warm for 3 hours and cool it rapidly to 550°C, then put the casting into the heat treatment furnace at 80°C /h speed cooling to below 300 ℃ out of the furnace and air cooling to obtain phosphorus copper titanium wear-resistant cast iron.
以上对本发明的具体实施方式作了说明，但这些说明不能被理解为限制了本发明的范围，本发明的保护范围由随附的权利要求书限定，仼何在本发明权利要求基础上的任何修改、等同替换和改进等，均落入本发明的保护范围之內。The specific embodiments of the present invention have been described above, but these descriptions can not be interpreted as limiting the scope of the present invention, and the protection scope of the present invention is defined by the appended claims, and any modification on the basis of the claims of the present invention , equivalent replacements and improvements, etc., all fall within the protection scope of the present invention.
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