CN103484770A - Heavy truck gearbox synchronizer hub powder metallurgy formula - Google Patents

Heavy truck gearbox synchronizer hub powder metallurgy formula Download PDF

Info

Publication number
CN103484770A
CN103484770A CN201310471601.6A CN201310471601A CN103484770A CN 103484770 A CN103484770 A CN 103484770A CN 201310471601 A CN201310471601 A CN 201310471601A CN 103484770 A CN103484770 A CN 103484770A
Authority
CN
China
Prior art keywords
powder
powder metallurgy
nickel
copper
carbon
Prior art date
Application number
CN201310471601.6A
Other languages
Chinese (zh)
Inventor
杨秀梅
李庚栩
Original Assignee
西安金欣粉末冶金有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安金欣粉末冶金有限公司 filed Critical 西安金欣粉末冶金有限公司
Priority to CN201310471601.6A priority Critical patent/CN103484770A/en
Publication of CN103484770A publication Critical patent/CN103484770A/en

Links

Abstract

A heavy truck gearbox synchronizer hub powder metallurgy formula comprises 0.01-0.8wt% of C, 0.5-3wt% of Cu, 2-8wt% of Ni, and the balance Fe powder, or comprises 0.01-0.8wt% of C, 0.5-3wt% of Cu, 2-8wt% of Ni, 0.2-0.8wt% of Mo, 0.1-0.15wt% of MnM, and the balance Fe powder. The formula enables a hub density to be not lower than 6.8g/cm<3>, a hub matrix hardness to be not lower than HRB70 and a high frequency quenching hardness to be above HRA68.

Description

A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub
Technical field
The invention belongs to the synchromesh gear hub technical field, particularly a kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub.
Background technology
Synchromesh gear hub is the important component in wheel box, its complex structure, hardness and tensile strength etc. is all had to very high requirement, especially for heavy truck, the synchromesh gear hub made according to current composition and engineering, be easy to cause the problems such as operation is not smooth, abnormal sound noise, can cause when serious losing efficacy, affected the serviceability of wheel box.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub, usefulness is higher, is adapted to the various requirement of heavy type lorry transmission-gear box synchromesh gear hub.
To achieve these goals, the technical solution used in the present invention is:
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio:
Carbon 0.01-0.8%, copper 0.5-3%, nickel 2-8%, surplus is iron powder.
The another kind of formula of the powder metallurgy of a kind of heavy type lorry transmission-gear box synchromesh gear hub of the present invention is comprised of the raw material of following weighing by weight ratio:
Carbon 0.2-0.9%, copper 1-5%, nickel 1.55-8%, molybdenum 0.2-0.8%, surplus is iron powder.
The another kind of formula of the powder metallurgy of a kind of heavy type lorry transmission-gear box synchromesh gear hub of the present invention is comprised of the raw material of following weighing by weight ratio:
Carbon 0.01-0.8%, copper 0.5-3%, nickel 2-8%, molybdenum 0.2-0.8%, MnM0.1-0.15%, surplus is iron powder.
The another kind of formula of the powder metallurgy of a kind of heavy type lorry transmission-gear box synchromesh gear hub of the present invention is comprised of the raw material of following weighing by weight ratio:
Carbon 0.8%, copper 1.5%, nickel 2.5%, MnM0.15%, lubricant 0.6%, surplus is iron powder.
The alloy iron powder form that described copper, nickel, molybdenum are made with the part diffusion process adds.
Compared with prior art, the invention has the beneficial effects as follows:
1, can make tooth hub density be more than or equal to every cubic centimetre of 6.8 gram, disposable pressed density can reach every cubic centimetre of 6.8-7.2 gram.
2, can make tooth hub matrix hardness be more than or equal to HRB70, more than high-frequency quenching hardness HRA68.
Embodiment
Describe embodiments of the present invention in detail below in conjunction with embodiment.
Embodiment mono-
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 1%, and copper 1%, nickel 6%, surplus is iron powder.
Its preparation comprises the steps:
A will put into the mould slug press by the raw material powder mixed, and adopt the FY450T mouldenpress, dress powder height: 40 ± 1mm, pressure: 160-180T; Density:>=6.85g/cm 3; Weight: the 190-200 gram, physical dimension: 72.5mm;
B puts into sintering oven, first 950-1050 ℃ of presintering 90min, and then 1100-1120 ℃ of sintering 40-60min under natural gas atmosphere, follow cooling 20-90min.Natural gas atmosphere makes safe, and accessory appearance color even, hardness are even, and dimensional change is little;
C carries out shaping by the multistage stamping machine, uses Three Up Three Down powder metallurgy special die carrier, and pressure: 8-10MPa, make density more even with moving the powder function, guarantees that parts density homogeneity deviation is in 0.15%, male spline size in guaranteeing;
The D machining;
E adopts the Full-automatic high frequency quenching furnance, 860-900 ℃ of high-frequency quenching 5-7 second, heat-treats, and more than hardness can reach HRA68, layer depth: more than 0.5;
The F deburring
G utilizes the fully-automatic supersonic cleaning machine to clean, clear up
The H check.Use three-coordinates measuring machine to check dimensions, use cloth, Rockwell hardness instrument to detect workpiece hardness.
Embodiment bis-
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.01%, and copper 3%, nickel 8%, surplus is iron powder.
Preparation technology is consistent with embodiment mono-.
Embodiment tri-
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.8%, and copper 0.5%, nickel 2%, surplus is iron powder.
Preparation technology is consistent with embodiment mono-.
Embodiment tetra-
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.8%, and copper 0.5%, nickel 2%, molybdenum 0.2%, MnM0.15%, surplus is iron powder.
In preparation technology, the alloy iron powder form that the mixed powder of copper nickel molybdenum is made by diffusion process adds, adopt the Distaloy AB diffusion alloy iron powder of Co., Ltd in He Genasi in the present embodiment, the composition of Distaloy AB powder is Ni, Cu, Mo, its original washing powder is the high purity atomized iron powder, itself be the alloy iron powder, because the single copper powder of tradition, nickel powder, molybdenum powder add, sintering is not easy alloying, hardness is inhomogeneous; MnM is a kind of machining auxiliary agent of Co., Ltd's exploitation in He Genasi.The powder metallurgy machining is usually more difficult, and influence factor is also very complicated.Adding machine processing aid MnM choose suitable cutting tool and machined parameters can greatly improve the machinability of material in mixed powder.Can avoid using the drawback of MnS when (usually adding 0.3-0.5%), prevent that the powdered metal parts surface from forming spot or getting rusty simultaneously.MnM has efficiently (add 0.10-0.15% get final product), part immaculate or the characteristics such as get rusty, and compared to MnS, the material machinability of interpolation MnM is better.Use the mixed powder of precompressed of MnM can save the holistic cost of production, as extended cutter life, the bright and clean immaculate of product surface, and be equally applicable to sinter-hardened product.Simultaneously, adopt MnM to replace traditional MnS, can extend cutter life, enhance productivity, improve piece surface smooth finish, improve dimensional uniformity; Adopt bonding blending processes of powders, mixed powder is even simultaneously.In preparation technology, all the other steps are consistent with embodiment mono-.
Embodiment five
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.01%, and copper 3%, nickel 8%, molybdenum 0.8%, MnM0.1%, surplus is iron powder.
Preparation technology is consistent with embodiment tetra-.
Embodiment six
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 1%, and copper 1%, nickel 5%, molybdenum 0.5%, MnM0.12%, surplus is iron powder.
Preparation technology is consistent with embodiment tetra-.
Embodiment seven
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.8%, and copper 1.5%, nickel 2.5%, MnM0.15%, lubricant 0.6%, surplus is iron powder.
Preparation technology is consistent with embodiment tetra-.
In the present invention, when the carbon ratio example when following, belongs to low-carbon alloy 0.7%, need to carry out carburizing and quenching, the carbon ratio example when above, belongs to high carbon alloy 0.7%, need to carry out high-frequency quenching.
Embodiment eight
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.2%, and copper 5%, nickel 1.55%, molybdenum 0.2%, surplus is iron powder.
Embodiment nine
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.9%, and copper 1%, nickel 8%, molybdenum 0.8%, surplus is iron powder.
Embodiment ten
A kind of powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub is comprised of the raw material of following weighing by weight ratio: carbon 0.4%, and copper 2%, nickel 3.56%, molybdenum 0.46%, surplus is iron powder.

Claims (6)

1. the powder metallurgy prescription of a heavy type lorry transmission-gear box synchromesh gear hub, is characterized in that, the raw material of following weighing by weight ratio, consists of:
Carbon 0.01-0.8%, copper 0.5-3%, nickel 2-8%, surplus is iron powder.
2. the powder metallurgy prescription of a heavy type lorry transmission-gear box synchromesh gear hub, is characterized in that, the raw material of following weighing by weight ratio, consists of:
Carbon 1%, copper 1%, nickel 6%, surplus is iron powder.
3. the powder metallurgy prescription of a heavy type lorry transmission-gear box synchromesh gear hub, is characterized in that, the raw material of following weighing by weight ratio, consists of:
Carbon 0.2-0.9%, copper 1-5%, nickel 1.55-8%, molybdenum 0.2-0.8%, surplus is iron powder.
4. the powder metallurgy prescription of a heavy type lorry transmission-gear box synchromesh gear hub, is characterized in that, the raw material of following weighing by weight ratio, consists of:
Carbon 0.01-0.8%, copper 0.5-3%, nickel 2-8%, molybdenum 0.2-0.8%, MnM0.1-0.15%, surplus is iron powder.
5. the powder metallurgy prescription of heavy type lorry transmission-gear box synchromesh gear hub according to claim 4, is characterized in that, the alloy iron powder form that described copper, nickel, molybdenum are made with the part diffusion process adds.
6. the powder metallurgy prescription of a heavy type lorry transmission-gear box synchromesh gear hub, is characterized in that, the raw material of following weighing by weight ratio, consists of:
Carbon 0.8%, copper 1.5%, nickel 2.5%, MnM0.15%, lubricant 0.6%, surplus is iron powder.
CN201310471601.6A 2013-10-10 2013-10-10 Heavy truck gearbox synchronizer hub powder metallurgy formula CN103484770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310471601.6A CN103484770A (en) 2013-10-10 2013-10-10 Heavy truck gearbox synchronizer hub powder metallurgy formula

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310471601.6A CN103484770A (en) 2013-10-10 2013-10-10 Heavy truck gearbox synchronizer hub powder metallurgy formula

Publications (1)

Publication Number Publication Date
CN103484770A true CN103484770A (en) 2014-01-01

Family

ID=49825358

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310471601.6A CN103484770A (en) 2013-10-10 2013-10-10 Heavy truck gearbox synchronizer hub powder metallurgy formula

Country Status (1)

Country Link
CN (1) CN103484770A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105149568A (en) * 2015-08-31 2015-12-16 苏州莱特复合材料有限公司 Powder metallurgy synchronizer hub and preparation method thereof
CN107812948A (en) * 2017-11-08 2018-03-20 江苏智造新材有限公司 A kind of processing method of powder metallurgy synchronizer tooth hub
CN109852897A (en) * 2018-12-28 2019-06-07 江苏智造新材有限公司 A kind of method for preparing powder metallurgy of double clutch large torque automatic gear-box synchromesh gear hubs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1755810A2 (en) * 2004-05-12 2007-02-28 Höganäs Ab Iron-based gear wheels produced by a process comprising uniaxially compacting, sintering and surface densifying
CN102335746A (en) * 2011-09-26 2012-02-01 吕元之 Powder metallurgy sedan synchronizer gear hub and production method thereof
CN103182510A (en) * 2013-03-07 2013-07-03 兴城市粉末冶金有限公司 Processing technology for powder metallurgy gear hub

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1755810A2 (en) * 2004-05-12 2007-02-28 Höganäs Ab Iron-based gear wheels produced by a process comprising uniaxially compacting, sintering and surface densifying
EP1755810B1 (en) * 2004-05-12 2009-02-25 Höganäs Ab Iron-based gear wheels produced by a process comprising uniaxially compacting, sintering and surface densifying
CN102335746A (en) * 2011-09-26 2012-02-01 吕元之 Powder metallurgy sedan synchronizer gear hub and production method thereof
CN103182510A (en) * 2013-03-07 2013-07-03 兴城市粉末冶金有限公司 Processing technology for powder metallurgy gear hub

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105149568A (en) * 2015-08-31 2015-12-16 苏州莱特复合材料有限公司 Powder metallurgy synchronizer hub and preparation method thereof
CN107812948A (en) * 2017-11-08 2018-03-20 江苏智造新材有限公司 A kind of processing method of powder metallurgy synchronizer tooth hub
CN109852897A (en) * 2018-12-28 2019-06-07 江苏智造新材有限公司 A kind of method for preparing powder metallurgy of double clutch large torque automatic gear-box synchromesh gear hubs

Similar Documents

Publication Publication Date Title
CN103406532B (en) A kind of car shaft-type component powder metallurgy material and preparation method thereof
US5729822A (en) Gears
JP4252625B2 (en) High density forming process using ferroalloy and prealloy
JP3741654B2 (en) Manufacturing method of high density iron-based forged parts
Narasimhan Sintering of powder mixtures and the growth of ferrous powder metallurgy
CN1662327B (en) Prealloyed iron-based powder, a method of producing sintered components and a component
CN101708549B (en) Powder metallurgy technical formula and technical process thereof
CN104015009B (en) A kind of mobile phone center, the preparation method of bonnet
CN103602849B (en) A kind of copper base alloy material for sliding bearing and preparation method thereof
CN103008667B (en) Method for preparing high-density iron-base powder metallurgy parts
CN106893920B (en) A kind of high-wearing feature multi-principal elements alloy cutter and preparation method thereof
CN103231050B (en) A kind of Powder metallurgy horizontal gear and preparation method thereof
JP2016188432A (en) Production method of powder metallurgy workpiece and workpiece
CN103602922B (en) A kind of powder metallurgical ferrous alloy and preparation method thereof
CN104384503B (en) A kind of ferrum copper-base powder metallurgy antifriction material and preparation method thereof
CN1946865B (en) Iron-based sintered alloy, iron-based sintered alloy member and method for producing those
CN100482842C (en) High malleable high wear-resisting cold process mould steel
CN104070160B (en) A kind of powder metallurgy duplicate gear and preparation method thereof
CN102343436B (en) In-situ sintered dispersion particle-reinforced warm-compacting powder metallurgy material and preparation method thereof
CA2658051C (en) Powder forged member, powder mixture for powder forging, method for producing powder forged member, and fracture split type connecting rod using the same
CN106011664A (en) High-performance powder metallurgical transmission gear
CN104789868B (en) High-strength wearable iron-base bearing
CN103526134A (en) High-performance powder metallurgy valve retainer material
WO2014101772A1 (en) Cobalt-chromium-molybdenum alloy with high wear resistance
CN108823478B (en) Ultra-fine high-entropy alloy binding phase metal ceramic and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140101