Unlock instant, AI-driven research and patent intelligence for your innovation.

Induction furnace molten steel covered with argon blowing protection pouring process and device

A technology for protecting pouring and induction furnaces, applied in the field of casting, can solve the problems of increasing non-metallic inclusions in castings and deteriorating the performance of castings, and achieve the effects of reducing argon consumption, reducing production costs, and being easy to implement

Active Publication Date: 2016-01-20
TAIZHOU XINYU PRECISION MFG CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such pouring operation will bring new secondary oxidation, that is, the oxidation of molten steel or molten iron in the pouring process, which increases the non-metallic inclusions in the casting and deteriorates the performance of the casting, especially for easy two This is especially true for sub-oxidized stainless steel, heat-resistant steel, and heat-resistant alloy castings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Induction furnace molten steel covered with argon blowing protection pouring process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Use induction furnace 14 with a capacity of 100kg to melt No. 45 carbon steel liquid. When the temperature of No. 45 carbon steel liquid 10 reaches 1580°C, remove all the slag on the top of the furnace 12, and then sprinkle 0.5kg of protection The composition of slag material (mass percentage) is: SiO 2 75%, Al 2 O 3 20%, MgO2%, CaO1.998%, ZrO1%, C <0.001%, FeO <0.002%; Let stand for 1 minute, the thickness of the slag hard shell 7 is 2mm; when the induction furnace 14 starts to tilt and pour the 45# carbon steel liquid 10 into the investment casting mold shell, adjust the pressure of the gas pressure gauge 5 Adjust the flow rate of the gas flow meter 4 to 2 liters per minute, and introduce argon into the gap between the upper surface of the No. 45 carbon steel liquid 10 in the furnace 12 and the slag hard shell 7. An argon protective gas film is formed on the upper surface of the liquid 10, thereby significantly reducing the secondary oxidation during the pour...

Embodiment 2

[0040] Example 2: The induction furnace 14 with a capacity of 100kg is used to melt the No. 45 carbon steel liquid. When the temperature of the No. 45 carbon steel liquid 10 reaches 1580°C, all the slag on the top of the furnace 12 is stripped off, and then 5kg of mold slag is sprinkled The composition (mass percentage) of the slag material is: SiO 2 75%, Al 2 O 3 20%, MgO2%, CaO1.998%, ZrO1%, C <0.001%, FeO <0.002%; stand for 3 minutes, the thickness of the slag hard shell 7 is 30mm; when the induction furnace 14 starts to tilt and pour the 45# carbon steel liquid 10 into the investment casting mold shell, adjust the pressure of the gas pressure gauge 5 Adjust the flow rate of the gas flow meter 4 to 200 liters per minute, and introduce argon into the gap between the upper surface of the No. 45 carbon steel liquid 10 in the furnace 12 and the slag hard shell 7. An argon protective gas film is formed on the upper surface of the liquid 10, thereby significantly reducing the secon...

Embodiment 3

[0041] Example 3: The induction furnace 14 with a capacity of 1000kg is used to melt the No. 45 carbon steel liquid. When the temperature of the No. 45 carbon steel liquid 10 reaches 1580°C, all the slag on the top of the furnace 12 is stripped off, and then 10 kg of protective slag is sprinkled The composition (mass percentage) of the slag material is: SiO 2 75%, Al 2 O 3 20%, MgO2%, CaO1.998%, ZrO1%, C <0.001%, FeO <0.002%; Let stand for 2 minutes, the thickness of the slag hard shell 7 is 15mm; when the induction furnace 14 starts to tilt and pour the 45# carbon steel liquid 10 into the investment casting mold shell, adjust the pressure of the gas pressure gauge 5 Adjust the flow rate of the gas flow meter 4 to 150 liters per minute, and introduce argon into the gap between the upper surface of the No. 45 carbon steel liquid 10 in the furnace 12 and the slag hard shell 7. An argon protective gas film is formed on the upper surface of the liquid 10, thereby significantly reduc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a covering argon blowing protective casting process and device of induction furnace molten steel. After the deoxidization treatment of the induction furnace molten steel is completed and all deoxidization slag is removed, a slag charge is spread on the surface of the molten steel to completely cover the surface of the molten steel; after standing for 1-3 minutes, a slag charge hard cover covering the surface of the molten steel is formed; a hole is formed in the slag charge hard cover, the outlet of an argon blowing stainless steel tube is put through the hole into a gap between the surface of the molten steel and the slag charge hard cover, argon is blown in and the normal gas pressure is maintained; before casting of the molten steel, a steel outlet is cut out or stabbed out at the edge of the slag charge hard cover near a steel tapping spout; for the casting of molten steel, argon is continuously blown into the gap between the surface of the molten steel liquid and the slag charge hard cover and the normal gas pressure is maintained until casting is finished. For the casting of the induction furnace molten steel, an argon protective layer is formed on the surface of the molten steel; as a result, secondary oxidization of the molten steel in the hearth is obviously reduced, the cleanliness and inherent quality of castings are remarkably improved, and the consumption of argon in the whole process is low and the production cost is low.

Description

Technical field [0001] The invention relates to the field of casting, in particular to an induction furnace molten steel covering and argon blowing protection pouring process and device. Background technique [0002] Induction furnaces are commonly used melting and smelting equipment in the field of foundry and metallurgy. They mainly include inductors, furnaces, furnace covers, discharge and dump hydraulic systems, water-cooled cables or copper bars, induction power supplies, and cooling water systems. The furnace is located in the sensor, and the furnace cover is placed on the upper mouth of the furnace. The induction power supply is connected to the sensor through a copper bar or water-cooled cable, and the cooling water is connected to the induction power supply, the sensor, the water-cooled cable or the copper bar. When melting and smelting steel, the cooling water system is first activated, and water is forcibly supplied to the induction power supply, water-cooled cables or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/072C21C7/076B22D1/00
CPCY02P10/20
Inventor 毛卫民荆剑王小东康燕许杜生颜平
Owner TAIZHOU XINYU PRECISION MFG CO LTD