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A kind of high-silicon wear-resistant steel nm360 hot-rolled steel strip and its production method

A production method and technology of wear-resistant steel, applied in the field of metallurgy, can solve the problems of difficult quenching plate shape control, high process cost, and high steel cost, and achieve the effects of reducing vehicle fuel consumption, reducing vehicle weight, and improving strength

Active Publication Date: 2021-08-13
TANGSHAN STAINLESS STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to investigation, at present, there are also units producing NM300 wear-resistant steel at home and abroad, each with its own process or method, but they all have one or more of the following deficiencies: ① A relatively high content of expensive alloy elements is added, and the cost of steel is high
②The process is complicated and the process cost is high
③ Due to the difficulty in controlling the shape of the quenched plate, there are no relevant reports on the production method of wear-resistant steel (plate) with a thickness ≤ 4mm
④ There is no report that the steel coil is directly formed into an ultra-high-strength wear-resistant hot-rolled steel process after hot rolling

Method used

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  • A kind of high-silicon wear-resistant steel nm360 hot-rolled steel strip and its production method
  • A kind of high-silicon wear-resistant steel nm360 hot-rolled steel strip and its production method
  • A kind of high-silicon wear-resistant steel nm360 hot-rolled steel strip and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The thickness of the low-cost high-silicon wear-resistant NM360 hot-rolled steel strip in this embodiment is 3.0mm, and its chemical composition and mass percentage are shown in Table 1.

[0035] The production method of the low-cost high-silicon wear-resistant hot-rolled steel strip in this embodiment includes converter smelting, LF furnace refining, slab continuous casting, heating, rough rolling, finish rolling, cooling, coiling process and stacking slow cooling storage, specifically The process steps are as follows:

[0036] (1) Converter smelting and LF furnace refining process: control the chemical composition and mass percentage of molten steel in Table 1;

[0037] (2) Slab continuous casting process: continuous casting to obtain a slab with a thickness of 200mm;

[0038] (3) Heating process: heating by a walking heating furnace, the temperature of the billet heating soaking section is 1280°C, the soaking time is 30 minutes, and the total heating time is 200 min...

Embodiment 2

[0045] In this embodiment, the thickness of the low-cost high-silicon wear-resistant NM360 hot-rolled steel strip is 3.5mm, and its chemical composition and mass percentage are shown in Table 1.

[0046] The production method of the low-cost high-silicon wear-resistant NM360 hot-rolled steel strip in this embodiment includes converter smelting, LF furnace refining, slab continuous casting, heating, rough rolling, finish rolling, cooling, coiling process and stacking slow cooling storage, Concrete process steps are as follows:

[0047] (1) Converter smelting and LF furnace refining process: control the chemical composition and mass percentage of molten steel in Table 1;

[0048] (2) Slab continuous casting process: continuous casting to obtain a slab with a thickness of 230mm;

[0049] (3) Heating process: heating by a walking heating furnace, the temperature of the billet heating soaking section is 1270°C, the soaking time is 35 minutes, and the total heating time is 180 minu...

Embodiment 3

[0056] The thickness of the low-cost high-silicon wear-resistant hot-rolled steel strip in this embodiment is 4.0mm, and its chemical composition and mass percentage are shown in Table 1.

[0057] The production method of the low-cost high-silicon wear-resistant hot-rolled steel strip in this embodiment includes converter smelting, LF furnace refining, slab continuous casting, heating, rough rolling, finish rolling, cooling, coiling process and stacking slow cooling storage, specifically The process steps are as follows:

[0058] (1) Converter smelting and LF furnace refining process: control the chemical composition and mass percentage of molten steel in Table 1;

[0059] (2) Slab continuous casting process: continuous casting to obtain a slab with a thickness of 230mm;

[0060] (3) Heating process: heating by a walking heating furnace, the temperature of the billet heating soaking section is 1290°C, the soaking time is 35 minutes, and the total heating time is 190 minutes; ...

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Abstract

The invention discloses a high-silicon wear-resistant steel NM360 hot-rolled steel strip and a production method thereof. The chemical composition and mass percentage of hot-rolled steel strip are: C: 0.080~0.120%, Mn: 1.850~2.200%, Si: 1.20~1.500%, Als: 0.020~0.060%, S≤0.008%, P≤0.0020 %, the balance is Fe and unavoidable impurities; production methods include converter smelting, LF furnace refining, slab continuous casting, heating, rough rolling, finish rolling, cooling, coiling process and stacking slow cooling storage. The invention has good wear resistance and processing performance, simple production process, can be used as a lightweight material for concrete mixing tanks, and has obvious practical value.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-silicon wear-resistant steel NM360 hot-rolled steel strip and a production method thereof. Background technique [0002] According to the relevant national load limit and environmental protection requirements, the requirements for vehicle load, light weight and fuel consumption are constantly increasing. Referring to the standard opinion draft of "Energy Saving and New Energy Automobile Industry Development Plan (2012-2020)" issued by the State Council, the requirements In 2020, the fuel consumption will be reduced by 15% on the basis of 2015, and lightweight will become the development trend of commercial vehicles. In terms of concrete mixer trucks, 520JJ materials have been used to make the tanks and blades of concrete mixer trucks. This material cannot meet the requirements for lightweight concrete mixer trucks. Although related companies have also devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C21C5/35C21C7/072C21C7/10C21D8/02C22C33/04
CPCC21C5/35C21C7/072C21C7/10C21D8/0205C21D8/0226C21D8/0263C22C33/04C22C38/02C22C38/04C22C38/06
Inventor 闫萍张玉文王朋飞贾丽慧赵建勇吴汉科吕苗苗李博张贤
Owner TANGSHAN STAINLESS STEEL