CN102825256A - Powder metallurgy material and cast iron material combining process - Google Patents
Powder metallurgy material and cast iron material combining process Download PDFInfo
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- CN102825256A CN102825256A CN2012102993768A CN201210299376A CN102825256A CN 102825256 A CN102825256 A CN 102825256A CN 2012102993768 A CN2012102993768 A CN 2012102993768A CN 201210299376 A CN201210299376 A CN 201210299376A CN 102825256 A CN102825256 A CN 102825256A
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Abstract
Disclosed is a powder metallurgy material and cast iron material combining process. A prepared powder metallurgy material part is in assembly connection with a cast iron material part; a single-surface clearance is controlled within a range between 0.02mm and 0.04mm; a copper infiltration plate is placed at a joint of a powder metallurgy material and a cast iron material; and the mixture of the copper infiltration plate, the powder metallurgy material and the cast iron material is fed into a presintering region to sinter for 30 minutes at the temperature ranging from 700 DEG C to 800 DEG C under the protective atmosphere of mixed gas containing 60% of liquid nitrogen gas and 40% of ammonia decomposition gas at first, then is fed into a high-temperature region to sinter for 30-50 minutes at the temperature ranging from 1120 DEG C to 1150 DEG C, is cooled and then is discharged from a furnace, so that a compound of the two materials is obtained. The copper infiltration plate comprises, in mass percent, 2.0-2.5% of Fe, 1.6-1.8% of C, 1.0-1.2% of Mn, 0.8-1.2% of Zn and the balance Cu, and is pressed on a 100T press under the pressure of 60T-65T, and the density is controlled within a range between 6.8g/cm3 and 7.1g/cm3; and the tensile strength of the materials connected by the process reaches 300-350MPa, the air tightness of the powder material reaches the condition that the powder material does not leak air when ventilating for 1 minute under the pressure of 0.8MPa, and wear resistance is excellent.
Description
Technical field
The present invention relates to a kind of application of powder metallurgy copperized technology, particularly powdered metallurgical material and cast iron materials process combined.
Background technology
Cast iron materials, powdered metallurgical material are widely used in mechanical industry, because every kind of material has unique mechanical performance, usually environment for use is inequality.But in the special environment of ask for something, need bring into play the property of two kinds of materials simultaneously, the mode through mechanical connection often can this mode receives the restriction of part space and shape, and result of use is bad.
Summary of the invention
In order to overcome the deficiency of above-mentioned mechanical connection manner; The object of the present invention is to provide powdered metallurgical material and cast iron materials process combined; Adopt powder metallurgy copperized technology that powdered metallurgical material and cast iron materials are organically combined; Solved the good performance of two kinds of material properties, guaranteed part machinery intensity and serviceability, and can design and process according to shape of product.
In order to achieve the above object, technical scheme of the present invention is achieved in that
Powdered metallurgical material and cast iron materials process combined may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is the Cu of 1.8-2%, the C of 0.6-0.8%, surplus is Fe; Matrix compact density 6.80-6.85g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is the C of 3.5-3.8%, the Si of 2.0-2.5%, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet; Composition of raw materials: the Zn of the Mn of the C of the Fe of 2.0-2.5%, 1.6-1.8%, 1.0-1.2%, 0.8-1.2%, surplus are Cu by mass percentage; On the 100T press, with 60T-65T pressure compacting copper seeping agent sheet, density is controlled at 6.8-7.1g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.02-0.04mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into 700 ℃ in pre-burning interface--800 ℃ of sintering temperatures 30 minutes; Get into again high-temperature region 1120--1150 ℃ sintering temperature 30-50 minute, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
Effect of the present invention: connect the back Tensile strength and reach 300-350MPa, it is air tight that the dusty material air-tightness reaches ventilation 0.8Mpa, 1 minute, and anti-wear performance is superior.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is done and to be described in detail.
Embodiment one
Present embodiment may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is 1.8% Cu, 0.6% C, surplus is Fe; Matrix compact density 6.80g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is 3.5% C, 2.0% Si, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet, composition of raw materials: 2.0% Fe, 1.6% C, 1.0% Mn, 0.8% Zn, surplus are Cu by mass percentage, on the 100T press, with 60T pressure compacting copper seeping agent sheet, density is controlled at 6.8g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.02mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into the 700 ℃ of following sintering in pre-burning interface 30 minutes; Get into the 1120 ℃ of sintering temperatures in high-temperature region 50 minutes again, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
Present embodiment connects the back Tensile strength and reaches 300MPa, and the dusty material air-tightness reaches ventilation 0.8Mpa, and 1 minute air tight, and anti-wear performance is general.
Embodiment two
Present embodiment may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is 2% Cu, 0.7% C, surplus is Fe; Matrix compact density 6.85g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is 3.8% C, 2.5% Si, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet, composition of raw materials: 2.5% Fe, 1.8% C, 1.2% Mn, 1.0% Zn, surplus are Cu by mass percentage, on the 100T press, with 65T pressure compacting copper seeping agent sheet, density is controlled at 7.1g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.04mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into the 750 ℃ of sintering temperatures in pre-burning interface 30 minutes; Get into the 1150 ℃ of sintering temperatures in high-temperature region 30 minutes again, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
Present embodiment connects the back Tensile strength and reaches 330MPa, and it is air tight that the dusty material air-tightness reaches ventilation 0.8Mpa, 1 minute, and anti-wear performance is good.
Embodiment three
Present embodiment may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is 1.9% Cu, 0.8% C, surplus is Fe; Matrix compact density 6.85g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is 3.6% C, 2.2% Si, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet, composition of raw materials: 2.2% Fe, 1.8% C, 1.0% Mn, 1.0% Zn, surplus are Cu by mass percentage, on the 100T press, with 62T pressure compacting copper seeping agent sheet, density is controlled at 6.9g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.03mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into the 800 ℃ of sintering temperatures in pre-burning interface 30 minutes; Get into the 1130 ℃ of sintering temperatures in high-temperature region 40 minutes again, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
Present embodiment connects the back Tensile strength and reaches 350MPa, and the dusty material air-tightness reaches ventilation 0.8Mpa, and 1 minute air tight, and anti-wear performance is good.
Through the above three kinds of schemes of contrast, the third scheme is best.
Claims (4)
1. powdered metallurgical material and cast iron materials process combined is characterized in that, may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is the Cu of 1.8-2%, the C of 0.6-0.8%, surplus is Fe; Matrix compact density 6.80-6.85g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is the C of 3.5-3.8%, the Si of 2.0-2.5%, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet; Composition of raw materials: the Zn of the Mn of the C of the Fe of 2.0-2.5%, 1.6-1.8%, 1.0-1.2%, 0.8-1.2%, surplus are Cu by mass percentage; On the 100T press, with 60T-65T pressure compacting copper seeping agent sheet, density is controlled at 6.8-7.1g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.02-0.04mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into 700 ℃ in pre-burning interface--800 ℃ of sintering temperatures 30 minutes; Get into again high-temperature region 1120--1150 ℃ sintering temperature 30-50 minute, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
2. powdered metallurgical material according to claim 1 and cast iron materials process combined is characterized in that, may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is 1.8% Cu, 0.6% C, surplus is Fe; Matrix compact density 6.80g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is 3.5% C, 2.0% Si, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet, composition of raw materials: 2.0% Fe, 1.6% C, 1.0% Mn, 0.8% Zn, surplus are Cu by mass percentage, on the 100T press, with 60T pressure compacting copper seeping agent sheet, density is controlled at 6.8g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.02mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into the 700 ℃ of following sintering in pre-burning interface 30 minutes; Get into the 1120 ℃ of sintering temperatures in high-temperature region 50 minutes again, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
3. powdered metallurgical material according to claim 1 and cast iron materials process combined is characterized in that, may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is 2% Cu, 0.7% C, surplus is Fe; Matrix compact density 6.85g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is 3.8% C, 2.5% Si, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet, composition of raw materials: 2.5% Fe, 1.8% C, 1.2% Mn, 1.0% Zn, surplus are Cu by mass percentage, on the 100T press, with 65T pressure compacting copper seeping agent sheet, density is controlled at 7.1g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.04mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into the 750 ℃ of sintering temperatures in pre-burning interface 30 minutes; Get into the 1150 ℃ of sintering temperatures in high-temperature region 30 minutes again, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
4. powdered metallurgical material according to claim 1 and cast iron materials process combined is characterized in that, may further comprise the steps:
The preparation of step 1, powdered metallurgical material, carbon cupric iron-base powder in the employing, material prescription is: mass percent is 1.9% Cu, 0.8% C, surplus is Fe; Matrix compact density 6.85g/cm
31100 ℃ of matrix sintering temperatures, sintering 30 minutes; Machining is carried out in the junction, and shape excessively cooperates with ironcasting;
The preparation of step 2, cast iron materials, adopt the ferrite-pearlite nodular cast iron: annealed condition, material prescription is: mass percent is 3.6% C, 2.2% Si, surplus is Fe; Carry out machining with the metallic sintered products junction, excessively cooperate;
Step 3, the preparation of oozing copper sheet, composition of raw materials: by mass percentage 2.2% Fe, 1.8% C, 1.0% Mn, 1.0% Zn, surplus are Cu, on the 100T press, suppress the copper seeping agent sheet with 62T pressure, density is controlled at 6.9g/cm
3Between;
Step 4, the assembling of powdered metallurgical material part and cast iron materials part is connected, the single face clearance control is at 0.03mm; To ooze copper sheet and be placed on the junction of two kinds of materials; Under the mixed gas protected atmosphere of liquid nitrogen gas 60%, decomposed ammonia body 40%; Be introduced into the 800 ℃ of sintering temperatures in pre-burning interface 30 minutes; Get into the 1130 ℃ of sintering temperatures in high-temperature region 40 minutes again, cooling is come out of the stove, two kinds of composite bodies that obtain connecting.
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| CN201210299376.8A CN102825256B (en) | 2012-08-22 | 2012-08-22 | Powder metallurgy material and cast iron material combining process |
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| CN103192083A (en) * | 2013-04-16 | 2013-07-10 | 苏州莱特复合材料有限公司 | Production process of copper-infiltrated parts by powder metallurgy |
| CN105648333A (en) * | 2016-03-31 | 2016-06-08 | 泰安皆瑞金属科技有限公司 | Copper-containing iron-based powder metallurgy material and preparation process thereof |
| CN108213437A (en) * | 2018-02-02 | 2018-06-29 | 陕西华夏粉末冶金有限责任公司 | New-energy automobile ferrous based powder metallurgical induction gear ring material component and the method using the material preparation induction gear ring |
| CN108526471A (en) * | 2018-06-11 | 2018-09-14 | 陕西华夏粉末冶金有限责任公司 | A kind of preparation method of ferrous based powder metallurgical friction pulley |
| CN109622975A (en) * | 2018-12-29 | 2019-04-16 | 北京恒源天桥粉末冶金有限公司 | A kind of powder metallurgy combined sintering formula plunger pump cylinder body and preparation method thereof |
| CN111853117A (en) * | 2020-06-16 | 2020-10-30 | 河南中钻新材料有限公司 | High-performance powder metallurgy friction brake pad material and preparation method thereof |
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| CN111853117B (en) * | 2020-06-16 | 2022-01-21 | 河南中钻新材料有限公司 | High-performance powder metallurgy friction brake pad material and preparation method thereof |
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