CN203053838U - Device for measuring friction coefficient under high-temperature high-pressure state - Google Patents
Device for measuring friction coefficient under high-temperature high-pressure state Download PDFInfo
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- CN203053838U CN203053838U CN 201320016668 CN201320016668U CN203053838U CN 203053838 U CN203053838 U CN 203053838U CN 201320016668 CN201320016668 CN 201320016668 CN 201320016668 U CN201320016668 U CN 201320016668U CN 203053838 U CN203053838 U CN 203053838U
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- heating furnace
- mould
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- force sensor
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Abstract
The utility model discloses a device for measuring friction coefficient under high-temperature high-pressure state. The device comprises a motor, a pull force sensor, a pressure sensor, a mold, a heating furnace, a support frame and a working table, wherein the motor, the mold, the support frame and the heating furnace are arranged on the working table; the pressure sensor is arranged above the mold; the motor is connected with the pull force sensor; and central lines of the heating furnace and the mold are on the same central line. A test sample can pass through the center of the heating furnace, and the heating furnace is internally filled with protective gases, and the temperature interval of the heating furnace is 100-1100 DEG C. The device provided by the utility model can measure friction coefficients at different temperatures, under different pressures and at different relative motion speeds, and additionally can measure friction coefficients of dry friction and under the effect of lubricating agents.
Description
Technical field
The utility model is specifically related to a kind of device of measuring friction factor under the high-temperature high-pressure state.
Background technology
Reducing resource loss, reducing CO2 emission is the significant challenge that present automobile industry faces.And in global emission of carbon-dioxide total amount, communications and transportation has accounted for 24%.The fuel total flow of about 1/3rd passenger car directly depends on its body weight.For example, according to the estimation of industry member, the weight that the every minimizing of automobile is 100 kilograms means that 0.3～0.5 liter of per 100 km of fuel-economizing drives.As seen, reach the purpose of energy-saving and emission-reduction, the development Light-duty Vehicle is the most important thing.Plow-steel (HSS) is showing very big potentiality aspect these challenges of reply, and it can reduce car weight under the prerequisite that does not reduce working strength.
But super-high strength steel at room temperature deformability is very poor.On the one hand, super-high strength steel plate intensity height, plastic yield narrow range at room temperature, required stamping press is big, easily cracking; On the other hand, the part resilience increases after the drawing, causes accessory size and shape stability variation.Therefore traditional cold stamping method is difficult to solve the problem that super-high strength steel runs in the body of a motor car manufacturing.In drop stamping technology, AHSS and UHSS plate are heated to austenitizing temperature (900～950 ℃) in heating furnace, and austenitic area maintenance 5 minutes, then plate is transferred to pressing machine, in diel, carry out drawing and quenching simultaneously, make formation of parts obtain 100% martensitic stucture.Compare with other forming technologies, the hot press-formed of plate has the following advantages: resistance of deformation is little, plasticity good, forming limit is high, be easy to shaping; Can produce the workpiece with complex geometric shapes, formation of parts has good dimensional accuracy; Be equipped with the proper heat treatment mode, can make plate bring into play its best performance, for automobile provides high-quality parts.
Friction is most important for hot press-formed process, has directly had influence on die wear and drip molding quality.How determining the friction factor under the high-temperature high-pressure state, is a key issue.In the method for different testing friction coefficients, because workpiece contacts differently with mould, this is definite extremely important to friction factor, and the contact conditions of the drop stamping of being similar to must be arranged.
The utility model content
For solving the shortcoming that prior art exists, the utility model specifically discloses a kind of device of measuring friction factor under the high-temperature high-pressure state.
The technical solution adopted in the utility model is as follows:
Measuring friction coefficient device under a kind of High Temperature High Pressure, this device comprises motor, pulling force sensor, pressure transducer, mould, heating furnace, bracing frame, worktable, described motor, mould, bracing frame, heating furnace are located on worktable, the top of mould is provided with pressure transducer, and described motor output shaft links to each other with pulling force sensor.
On the center line of described motor output shaft, heating furnace and mould on a center line.
The center of described heating furnace can allow sample pass, and is filled with blanket gas in the heating furnace, 100-1100 ℃ in furnace temp interval.
Described mould is a sample support frame of symmetry up and down, is provided with the upper die and lower die of mutual correspondence in the bracing frame.
Described motor is electro-motor, and electro-motor connects reducer casing, and the output shaft of reducer casing drives the screw rod rotation of screw mandrel, and then the motion of screw rod drive nut, and nut drives pulling force sensor at the surface level stretching motion.
Principle of work:
The sample that is processed into strip is heated to temperature required in being full of the heating furnace of blanket gas, and the clamper by the left side electrical motor driven shifts out sample.After the sample appointed area is positioned at die location, makes sample and mould directly come in contact by the pressure that applies vertical direction, and then produce friction.By measuring pulling force and pressure, can obtain friction factor by following computing formula.
Wherein be T
fPressure transducer records force value, and P is the value of thrust that pulling force sensor records, and unit is KN.
The beneficial effects of the utility model are:
100-1100 ℃ in this experimental provision furnace temp interval, blanket gas can be changed according to concrete needs.Pressure transducer and pulling force sensor acting force are controlled, and draw speed is adjustable.Can measure the friction factor under different temperatures, different pressures and the different speed of related movement, can carry out the unlubricated friction scrape along in addition has friction coefficient measurement under the lubricant.This experimental provision not only is applicable to hot press-formed process.
Description of drawings
Fig. 1 structural drawing of the present utility model;
1-electro-motor, 2-pulling force sensor, 3-pressure transducer, 4-mould, 5-heating furnace, 6-sample 7-bracing frame, 8-worktable among the figure.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated:
Measuring friction coefficient device under a kind of High Temperature High Pressure, this device comprises electro-motor 1, pulling force sensor 2, pressure transducer 3, mould 4, heating furnace 5, bracing frame 7, worktable 8, described electro-motor 1, mould 4, bracing frame 7, heating furnace 5 are located on worktable 8, the top of mould 4 is provided with pressure transducer 3, described electro-motor 1 connects reducer casing, the output shaft of described reducer casing drives the screw rod rotation of screw mandrel, and then the motion of screw rod drive nut, nut drives pulling force sensor 2 at the surface level stretching motion.Electro-motor 1 control pulling force sensor 2 is at the surface level stretching motion, and the bare terminal end of pulling force sensor 2 is clamped an end of sample 6, and sample 6 passes mould 4, heating furnace 5 successively, and the other end is fixed on the bracing frame 7.And be filled with blanket gas in the heating furnace 5,100-1100 ℃ of heating furnace 5 temperature ranges.
Described mould 4 is a sample support frame of symmetry up and down, and described sample 6 passes the center of bracing frame.
The concrete course of work is as follows:
1) will the shred sample 6 of (wide 20mm) is placed on the worktable 8, and an end is stepped up by the clamper with pulling force sensor 2, and the other end passes mould 4 and heating furnace 5, is supported by bracing frame 7.
2) with the logical blanket gas argon gas of heating furnace 5, and start heating arrangement, firing rate 12-15K/s, be heated to 930 ° after insulation 5 minutes.
3) under the guiding of clamper, sample 6 shifts out from heating furnace 5, and sample 6 aerial cooling velocities are about 15K/s, estimation required time under the assigned temperature when sample 6 arrival moulds 4, and calculated pulling speed thus, moves sample according to this speed.
4) after sample 6 arrived mould 4, mould 4 was closed under the effect of pressure transducer 3, and contacted with sample 6.When speed is even, gather numerical value and the record of pressure transducer 3 and pulling force sensor 2 by the data collecting card that connects computer.
5) calculate friction factor according to formula.
Claims (4)
1. device of measuring friction factor under the high-temperature high-pressure state, it is characterized in that: comprise motor, pulling force sensor, pressure transducer, mould, heating furnace, bracing frame, worktable, described motor, mould, bracing frame, heating furnace are located on worktable, the top of mould is provided with pressure transducer, and described motor output shaft links to each other with pulling force sensor.
2. the device of friction factor under the measurement high-temperature high-pressure state as claimed in claim 1 is characterized in that: on the center line of described motor output shaft, heating furnace and mould on a center line.
3. the device of friction factor under the measurement high-temperature high-pressure state as claimed in claim 1, it is characterized in that: the center of described heating furnace can allow sample pass, and is filled with blanket gas in the heating furnace.
4. the device of friction factor under the measurement high-temperature high-pressure state as claimed in claim 1 is characterized in that: described mould is a sample support frame of symmetry up and down, is provided with the upper die and lower die of mutual correspondence in the bracing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320016668 CN203053838U (en) | 2013-01-11 | 2013-01-11 | Device for measuring friction coefficient under high-temperature high-pressure state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320016668 CN203053838U (en) | 2013-01-11 | 2013-01-11 | Device for measuring friction coefficient under high-temperature high-pressure state |
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| Publication Number | Publication Date |
|---|---|
| CN203053838U true CN203053838U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320016668 Expired - Fee Related CN203053838U (en) | 2013-01-11 | 2013-01-11 | Device for measuring friction coefficient under high-temperature high-pressure state |
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| CN (1) | CN203053838U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630491A (en) * | 2013-12-12 | 2014-03-12 | 马鸣图 | Device for testing thermal friction coefficient of sheet material in hot stamping forming process |
| CN104359831A (en) * | 2014-11-12 | 2015-02-18 | 重庆科技学院 | Heat friction performance test bed of metal materials |
| CN104897564A (en) * | 2015-06-16 | 2015-09-09 | 华中科技大学 | Measuring device and method for friction factor of thermally formed steel under customization condition |
| CN105181577A (en) * | 2015-10-20 | 2015-12-23 | 烽火通信科技股份有限公司 | Optical cable dynamic friction coefficient test device and method |
| CN105510166A (en) * | 2016-01-06 | 2016-04-20 | 上海大学 | Plate-strip type high temperature friction wear testing machine and testing method thereof |
| CN106814028A (en) * | 2016-12-27 | 2017-06-09 | 南通华兴石油仪器有限公司 | A kind of high temperature friction coefficient measurement apparatus |
| CN108663315A (en) * | 2018-07-24 | 2018-10-16 | 宁波东方电缆股份有限公司 | A kind of friction testing arrangement |
| CN111537435A (en) * | 2020-04-07 | 2020-08-14 | 国网河南省电力公司电力科学研究院 | Device and method for testing friction coefficient of stranded wire and splicing fitting sleeve |
| CN112881279A (en) * | 2021-01-12 | 2021-06-01 | 中铝材料应用研究院有限公司 | Plate friction coefficient testing device and method |
-
2013
- 2013-01-11 CN CN 201320016668 patent/CN203053838U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630491A (en) * | 2013-12-12 | 2014-03-12 | 马鸣图 | Device for testing thermal friction coefficient of sheet material in hot stamping forming process |
| CN104359831A (en) * | 2014-11-12 | 2015-02-18 | 重庆科技学院 | Heat friction performance test bed of metal materials |
| CN104359831B (en) * | 2014-11-12 | 2018-08-21 | 重庆科技学院 | Metal material thermal friction performance test stand |
| CN104897564A (en) * | 2015-06-16 | 2015-09-09 | 华中科技大学 | Measuring device and method for friction factor of thermally formed steel under customization condition |
| CN105181577A (en) * | 2015-10-20 | 2015-12-23 | 烽火通信科技股份有限公司 | Optical cable dynamic friction coefficient test device and method |
| CN105510166A (en) * | 2016-01-06 | 2016-04-20 | 上海大学 | Plate-strip type high temperature friction wear testing machine and testing method thereof |
| CN106814028A (en) * | 2016-12-27 | 2017-06-09 | 南通华兴石油仪器有限公司 | A kind of high temperature friction coefficient measurement apparatus |
| CN108663315A (en) * | 2018-07-24 | 2018-10-16 | 宁波东方电缆股份有限公司 | A kind of friction testing arrangement |
| CN111537435A (en) * | 2020-04-07 | 2020-08-14 | 国网河南省电力公司电力科学研究院 | Device and method for testing friction coefficient of stranded wire and splicing fitting sleeve |
| CN111537435B (en) * | 2020-04-07 | 2022-04-22 | 国网河南省电力公司电力科学研究院 | Device and method for testing friction coefficient of stranded wire and splicing fitting sleeve |
| CN112881279A (en) * | 2021-01-12 | 2021-06-01 | 中铝材料应用研究院有限公司 | Plate friction coefficient testing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20140111 |