CN104046912A - Processing method of heat resistant steel high alloy grate plate - Google Patents
Processing method of heat resistant steel high alloy grate plate Download PDFInfo
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- CN104046912A CN104046912A CN201310097859.4A CN201310097859A CN104046912A CN 104046912 A CN104046912 A CN 104046912A CN 201310097859 A CN201310097859 A CN 201310097859A CN 104046912 A CN104046912 A CN 104046912A
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Abstract
A processing method of a heat resistant steel high alloy grate plate comprises the following steps: selecting all components according to contents required by the heat resistant steel high alloy grate plate, casting the grate plate, annealing the grate plate, carrying out heat insulation at 250DEG C for 2h, heating to 650DEG C, carrying out heat insulation for 2h, heating to 950DEG C, carrying out heat insulation for 4h, cooling with a furnace to 200-350DEG C, and carrying out air cooling, wherein the heat insulation time increases by 1h if the thickness of the grate plate is thickens by 10mm; quenching, adding the grate plate into the furnace with the temperature below 650DEG C, heating to 880DEG C, carrying out heat insulation for 3h, taking out, and carrying out oil quenching; tempering, adding the grate plate to the furnace at normal temperature, heating to 350DEG C according to a heating rate of 50-60DEG C/h, carrying out heat insulation for 6h, and carrying out air cooling; ball-blasting, and shaping; and testing the mechanical performances, and warehousing products according with standards. The heat resistant steel high alloy grate plate finally obtained in the invention has good mechanical performances and a long service life, and can meet requirements of high temperature resistance, burning loss resistance, no fracture, no deformation, high hardness, high toughness and high wear resistance.
Description
Technical field
The present invention relates to a kind of high temperature steel, particularly relate to the working method for a kind of high temperature steel high alloy grate plate of rotary kiln.
Background technology
Rotary kiln grate plate is widely used in the industries such as electric power, metallurgy, chemical industry, cement.Grate plate is as main heat-resisting abrasion piece, and Year's consumption is huge.The material that the rotary kiln high temperature steel grate plate that China uses is at present used is mostly manufactured with alloy steel material.
Due to steel alloy, particularly general low alloy steel various element proportionings imbalances or improper in manufacturing high temperature steel process, can not really provide and meet the requirement of high temperature resistant, resistance to scaling loss, anti-fracture and high rigidity, high tenacity, high-wearing feature, and high temperature steel wear resisting property is poor, working life is short, use value is on the low side, is not easy to large-scale promotion and uses.
Summary of the invention
Object of the present invention is exactly the working method that a kind of high temperature steel high alloy grate plate will be provided, and it can overcome the existing problem of above product well.
The object of the present invention is achieved like this, a working method for high temperature steel high alloy grate plate, is characterized in that: choose each component according to high temperature steel high alloy grate plate desired content, its weight percentage is: carbon 0.30-0.40, manganese 0.85-1.50, silicon 1.30-1.80, chromium 25.00-28.00, nickel 8.00-10.00, molybdenum 0.30-0.50, nitrogen≤0.20, phosphorus≤0.04, sulphur≤0.03.Then cast this grate plate; Grate plate is put to heat treatment furnace and carried out anneal, temperature rises to 250 DEG C of constant temperature 2 hours from zero degree, rise to 650 DEG C of constant temperature 2 hours with 60 DEG C/h of speed from 250 DEG C again, rise to 950 DEG C of constant temperature 4 hours with 50 DEG C/h of speed from 650 DEG C, the every increase of the thickness 10mm of grate plate, constant temperature time just increases by 1 hour, after be chilled to 200-350 DEG C with stove after air cooling; Quench treatment, entering stove lower than 600 DEG C, is warming up to 880 DEG C constant temperature 3 hour with 60-80 DEG C/h of speed by grate plate, takes out oil quenching; Temper, enters stove by grate plate at normal temperature, is warming up to 350 DEG C of constant temperature after 6 hours, air cooling with 50-60 DEG C/h; Shot Blasting, shaping; Measuring mechanical property, reaches the product of ZG35Cr27Ni9SiMoN GB8492-1987 technical requirements, enters storehouse.
The present invention makes particularly thick grate plate of grate plate, not only high temperature resistant, resistance to scaling loss, do not rupture, indeformable, and hardness is high, section hardness is even, good toughness, wear resistance is good.Improve the work-ing life of grate plate, can be under the high-temperature condition of 650-1250 DEG C, work long hours normal, satisfactory for result, there is very high practical value and promote the use of prospect.
Embodiment
A kind of working method of high temperature steel high alloy grate plate, it is characterized in that: choose each component according to high temperature steel high alloy grate plate desired content, its weight percentage is: carbon 0.30-0.40, manganese 0.85-1.50, silicon 1.30-1.80, chromium 25.00-28.00, nickel 8.00-10.00, molybdenum 0.30-0.50, nitrogen≤0.20, phosphorus≤0.04, sulphur≤0.03.Then cast this grate plate; Grate plate is put to heat treatment furnace and carried out anneal, temperature rises to 250 DEG C of constant temperature 2 hours from zero degree, rise to 650 DEG C of constant temperature 2 hours with 60 DEG C/h of speed from 250 DEG C again, rise to 950 DEG C of constant temperature 4 hours with 50 DEG C/h of speed from 650 DEG C, the every increase of the thickness 10mm of grate plate, constant temperature time just increases by 1 hour, after be chilled to 200-350 DEG C with stove after air cooling; Quench treatment, entering stove lower than 600 DEG C, is warming up to 880 DEG C constant temperature 3 hour with 60-80 DEG C/h of speed by high temperature steel high alloy grate plate, takes out oil quenching; Temper, enters stove by grate plate at normal temperature, is warming up to 350 DEG C of constant temperature after 6 hours, air cooling with 50-60 DEG C/h; Shot Blasting, shaping; Measuring mechanical property, reaches the product of ZG35Cr27Ni9SiMoN GB8492-1987 technical requirements, enters storehouse.
The present invention reaches high alloy grate plate mechanical property: heat-resisting degree reaches 1250 DEG C, and yield strength is not less than 260mPa, and tensile strength is not less than 650mPa, and impelling strength is not less than 6J/cm
2, elongation is not more than 9%, and surface hardness can reach 63HRC.The present invention compares with existing high temperature steel high alloy grate plate, has high temperature resistant, resistance to scaling loss, anti-fracture, indeformable and high rigidity, high tenacity, high abrasion, long service life, and practical value is high, and can improve twice work-ing life.
Claims (1)
1. the working method of a high temperature steel high alloy grate plate, it is characterized in that, choose each component according to high temperature steel high alloy grate plate desired content, its weight percentage is: carbon 0.30-0.40, manganese 0.85-1.50, silicon 1.30-1.80, chromium 25.00-28.00, nickel 8.00-10.00, molybdenum 0.30-0.50, nitrogen≤0.20, phosphorus≤0.04, sulphur≤0.03.Then cast this grate plate; Grate plate is put to heat treatment furnace and carried out anneal, temperature rises to 250 DEG C of constant temperature 2 hours from zero degree, rise to 650 DEG C of constant temperature 2 hours with 60 DEG C/h of speed from 250 DEG C again, rise to 950 DEG C of constant temperature 4 hours with 50 DEG C/h of speed from 650 DEG C, the every increase of the thickness 10mm of grate plate, constant temperature time just increases by 1 hour, after be chilled to 200-350 DEG C with stove after air cooling; Quench treatment, entering stove lower than 600 DEG C, is warming up to 880 DEG C constant temperature 3 hour with 60-80 DEG C/h of speed by grate plate, takes out oil quenching; Temper, enters stove by grate plate at normal temperature, is warming up to 350 DEG C of constant temperature after 6 hours, air cooling with 50-60 DEG C/h; Shot Blasting, shaping; Measuring mechanical property, reaches the product of ZG35Cr27Ni9SiMoN GB8492-1987 technical requirements, enters storehouse.The heat-resisting degree of high temperature steel high alloy grate plate reaches 1250 DEG C, and yield strength is not less than 260mPa, and tensile strength is not less than 650mPa, and impelling strength is not less than 6J/Gm
2, elongation is not more than 9%, and surface hardness can reach 63HRC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310097859.4A CN104046912B (en) | 2013-03-15 | 2013-03-15 | A kind of processing method of heat resisting steel high alloy grate plate |
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| CN201310097859.4A CN104046912B (en) | 2013-03-15 | 2013-03-15 | A kind of processing method of heat resisting steel high alloy grate plate |
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| CN104046912A true CN104046912A (en) | 2014-09-17 |
| CN104046912B CN104046912B (en) | 2016-09-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5739128A (en) * | 1980-08-15 | 1982-03-04 | Tone Boring Co | Preparation of heat resistant cutter bit for dental die |
| JP2000063936A (en) * | 1998-08-17 | 2000-02-29 | Toshiba Mach Co Ltd | Part for plastic processing equipment, and its manufacture |
| EP0965653B1 (en) * | 1997-11-14 | 2002-05-22 | Mitsubishi Materials Corporation | VALVE SEAT MADE OF Fe-BASE SINTERED ALLOY EXCELLENT IN WEAR RESISTANCE |
| JP2008063936A (en) * | 2006-08-07 | 2008-03-21 | Sk Kaken Co Ltd | Wall face structure |
| CN102605272A (en) * | 2012-03-31 | 2012-07-25 | 三一集团有限公司 | Low-alloy ultrahigh-strength wear-resistant steel and production method thereof |
-
2013
- 2013-03-15 CN CN201310097859.4A patent/CN104046912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5739128A (en) * | 1980-08-15 | 1982-03-04 | Tone Boring Co | Preparation of heat resistant cutter bit for dental die |
| EP0965653B1 (en) * | 1997-11-14 | 2002-05-22 | Mitsubishi Materials Corporation | VALVE SEAT MADE OF Fe-BASE SINTERED ALLOY EXCELLENT IN WEAR RESISTANCE |
| JP2000063936A (en) * | 1998-08-17 | 2000-02-29 | Toshiba Mach Co Ltd | Part for plastic processing equipment, and its manufacture |
| JP2008063936A (en) * | 2006-08-07 | 2008-03-21 | Sk Kaken Co Ltd | Wall face structure |
| CN102605272A (en) * | 2012-03-31 | 2012-07-25 | 三一集团有限公司 | Low-alloy ultrahigh-strength wear-resistant steel and production method thereof |
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| CN104046912B (en) | 2016-09-14 |
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Effective date of registration: 20170612 Address after: 226623, Jiangsu County, Nantong City, Haian Province North Industrial Park, the Eastern District Patentee after: Nantong Aorun Building Material Technology Co., Ltd. Address before: Changan City, Jiangsu Province town village 214517 quarter Jingjiang Liu Dai No. 137 Patentee before: Ding Nianhua |