CN103350331A - Manufacturing method of high-strength automobile brake hub - Google Patents

Manufacturing method of high-strength automobile brake hub Download PDF

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Publication number
CN103350331A
CN103350331A CN 201310311164 CN201310311164A CN103350331A CN 103350331 A CN103350331 A CN 103350331A CN 201310311164 CN201310311164 CN 201310311164 CN 201310311164 A CN201310311164 A CN 201310311164A CN 103350331 A CN103350331 A CN 103350331A
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CN
China
Prior art keywords
automobile brake
wheel hub
alloy
hub
casting
Prior art date
Application number
CN 201310311164
Other languages
Chinese (zh)
Inventor
罗绍康
Original Assignee
宁波吉威熔模铸造有限公司
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 宁波吉威熔模铸造有限公司 filed Critical 宁波吉威熔模铸造有限公司
Priority to CN 201310311164 priority Critical patent/CN103350331A/en
Publication of CN103350331A publication Critical patent/CN103350331A/en

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Abstract

The invention relates to a manufacturing method of a high-strength automobile brake hub. The manufacturing method of the high-strength automobile brake hub comprises the following steps of manufacturing an automobile hub alloy spinning wheel blank according to the gravity casting method, conducting surface treatment and homogenization treatment on the surface of the cast spinning wheel blank, manufacturing an automobile brake hub blank according to the hot spinning technology, manufacturing the automobile brake alloy hub after conducting heat treatment, fine machining and surface coating on the automobile brake hub blank. The manufacturing method of the high-strength automobile brake hub can solve the problem that an existing automobile brake hub is poor in strength, and can remarkably improve the usage efficiency of the automobile brake hub.

Description

A kind of manufacture method of high-strength automobile brake wheel hub
Technical field
The present invention relates to the auto parts machinery field, specifically, relate to a kind of manufacture method of high-strength automobile brake wheel hub.
Background technology
Automotive hub also is the most significantly parts of automotive light weight technology effect as one of the heaviest automobile component, and the alloy automobile wheel hub mainly adopts casting, forging, casting forging and squeezes and revolves combined shaping method at present.Casting of automobile hub mainly adopts the method preparations such as gravitational casting, low pressure casting, extrusion casint, and oneself has relevant report both at home and abroad.But owing to spoke, the thick position of the wheel performance of casting of automobile hub all do not reach the automotive hub performance indications, cause hardness excessively low, be difficult to apply.
Summary of the invention
The manufacture method that the purpose of this invention is to provide a kind of high-strength automobile brake wheel hub
In order to realize purpose of the present invention, the invention provides a kind of manufacture method of high-strength automobile brake wheel hub, the method comprises the following steps: to adopt gravitation casting method to prepare alloy automobile wheel hub spinning wheel blank, the casting biscuit throwing is after Surface Machining, homogenising are processed, utilize hot spinning technique to prepare the automotive hub blank, again through Overheating Treatment, accurately processing and external coating prepare the alloy automobile wheel hub.
Preferably, described alloy prepares by following manner: with the melting in the high-frequency vacuum smelting furnace of steel material, cast subsequently, cooling velocity is that 1.6 ℃/min is to form ingot in this casting; Ingot 900 ℃ of lower maintenances 8 hours, was then kept 60 minutes under 550 ℃; After this use 500 tons of hammer forging machines to carry out forge hot, make like this aluminium alloy, it is characterized in that, the consisting of of described steel material (in % by weight):
0.25% to 0.29% carbon;
0.10% to 1.20% tellurium;
0.09% to 0.13% phosphorus;
0.10% to 0.19% sulphur;
0.60% to 1.00% silicon;
≤ 0.09% aluminium;
≤ 0.01% nitrogen;
0.45% to 0.83% chromium;
0.04% to 0.07% niobium;
≤ 0.50% copper;
0.25% to 0.70% europium;
0.2% to 2.00% molybdenum;
0.2% to 0.4% vanadium;
0.0075% to 0.0095% ytterbium;
0.010% to 0.050% titanium:
All the other are iron and inevitable impurity.
More preferably, the consisting of of described steel material (in % by weight):
0.27% carbon;
0.60% tellurium;
0.10% phosphorus;
0.16% sulphur;
0.80% silicon;
0.03% aluminium;
0.005% nitrogen;
0.57% chromium;
0.05% niobium;
0.30% copper;
0.55% europium;
1.00% molybdenum;
0.3% vanadium;
0.0085% ytterbium;
0.035% titanium:
All the other are iron and inevitable impurity.
Method of the present invention not only can solve the problem of automobile brake wheel hub intensity difference, and can obviously reduce the service efficiency of automobile brake wheel hub.
The specific embodiment
Below the invention will be further described for the description by the specific embodiment, but this is not to be limitation of the present invention, those skilled in the art are according to basic thought of the present invention, can make various modifications or improvement, but only otherwise break away from basic thought of the present invention, all within the scope of the present invention.
The manufacture method of embodiment 1 automobile brake wheel hub
The consisting of of alloy (in % by weight):
0.27% carbon;
0.60% tellurium;
0.10% phosphorus;
0.16% sulphur;
0.80% silicon;
0.03% aluminium;
0.005% nitrogen;
0.57% chromium;
0.05% niobium;
0.30% copper;
0.55% europium;
1.00% molybdenum;
0.3% vanadium;
0.0085% ytterbium;
0.035% titanium:
All the other are iron and inevitable impurity.
To have 30kg steel material melting in the high-frequency vacuum smelting furnace that mentioned component forms, and cast subsequently, cooling velocity is that 1.6 ℃/min is to form ingot in this casting.Ingot 900 ℃ of lower maintenances 8 hours, was then kept 60 minutes under 550 ℃.After this use 500 tons of hammer forging machines to carry out forge hot, make like this alloy 1.
Alloy is put into the preheating furnace preheating, and the preheating furnace temperature is 370 ℃, and be 1.5h preheating time, then preheated alloy is put into the smelting furnace crucible, the fusing that heats up, refining degasification, the alloy melt temperature is controlled at 700 ℃, adopts the CO of equivalent in the melt preparation process 2And SF 6Mixed gas protected.The above-mentioned alloy melt for preparing is cast into alloy automobile wheel hub spinning wheel blank by casting technique, and the casting and pouring temperature is 700 ℃, and mold temperature is 400 ℃, and mould remaining time is 5min; Then air-cooled, the air-cooled time is 4min; Then the demoulding, the CO of employing equivalent in the mold 2And SF 6Mixed gas protected.At first according to the biscuit throwing dimensional requirement, adopt numerically controlled lathe that above-mentioned Alloys Casting biscuit throwing is carried out Surface Machining; Then put into preheating furnace and carry out after homogenising processes, homogenization temperature is 300 ℃, and homogenization time is 1.5h; Adopt at last hot spinning technique that the automotive casting biscuit throwing is carried out hot spinning and be shaped, prepare in the shaping of alloy automobile wheel hub blank hot spinning, the core temperature is 300 ℃, and the spinning roller rotating speed is 600r/min, and the amount of feeding is 0.4mm/r.The alloy automobile wheel hub blank of preparation is put into heat-treatment furnace carry out solution treatment, the two stage process mode is adopted in solution treatment, namely first at 300 ℃ of insulation 4h, then at 400 ℃ of insulation 8h, adopts 75 ℃ of warm water to quench; Again put into heat-treatment furnace and carry out Ageing Treatment, treatment temperature is 180 ℃, and temperature retention time is 8h, and then air cooling is to room temperature.Alloy automobile wheel hub blank after the heat treatment accurately is processed into automobile brake wheel hub 1.
The preparation of embodiment 2 automobile brake wheel hubs
According to preparing automobile brake wheel hub 2 with embodiment 1 identical mode, difference is that alloy does not contain molybdenum.
The preparation of embodiment 3 automobile brake wheel hubs
According to preparing automobile brake wheel hub 3 with embodiment 1 identical mode, difference is that alloy does not contain ytterbium.
The preparation of embodiment 4 automobile brake wheel hubs
According to preparing automobile brake wheel hub 4 with embodiment 1 identical mode, difference is that alloy does not contain europium.
Experimental example 1
Measure the Brinell hardness of automobile brake wheel hub 1-4 according to GB/T231.1-2009.The result is as follows: the Brinell hardness of automobile brake wheel hub 1 is 263HRC, and the Brinell hardness of automobile brake wheel hub 2 is 147HRC, and the Brinell hardness of automobile brake wheel hub 3 is 165HRC, and the Brinell hardness of automobile brake wheel hub 4 is 151HRC.
Experimental example 2
Measure tensile strength according to GB/T228-2002.The result is as follows: the tensile strength R of automobile brake wheel hub 1 mBe 898 MPas, the tensile strength R of automobile brake wheel hub 2 mBe 656 MPas, the tensile strength R of automobile brake wheel hub 3 mBe 637 MPas, the tensile strength R of automobile brake wheel hub 4 mBe 643 MPas.

Claims (3)

1. the manufacture method of a high-strength automobile brake wheel hub, the method comprises the following steps: to adopt gravitation casting method to prepare alloy automobile wheel hub spinning wheel blank, the casting biscuit throwing is after Surface Machining, homogenising are processed, utilize hot spinning technique to prepare the automotive hub blank, again through Overheating Treatment, accurately processing and external coating prepare the alloy automobile wheel hub.
2. the manufacture method of high-strength automobile brake wheel hub according to claim 1, it is characterized in that, described alloy prepares by following manner: with the melting in the high-frequency vacuum smelting furnace of steel material, cast subsequently, cooling velocity is that 1.6 ℃/min is to form ingot in this casting; Ingot 900 ℃ of lower maintenances 8 hours, was then kept 60 minutes under 550 ℃; After this use 500 tons of hammer forging machines to carry out forge hot, make like this aluminium alloy, it is characterized in that, the consisting of of described steel material (in % by weight):
0.25% to 0.29% carbon;
0.10% to 1.20% tellurium;
0.09% to 0.13% phosphorus;
0.10% to 0.19% sulphur;
0.60% to 1.00% silicon;
≤ 0.09% aluminium;
≤ 0.01% nitrogen;
0.45% to 0.83% chromium;
0.04% to 0.07% niobium;
≤ 0.50% copper;
0.25% to 0.70% europium;
0.2% to 2.00% molybdenum;
0.2% to 0.4% vanadium;
0.0075% to 0.0095% ytterbium;
0.010% to 0.050% titanium:
All the other are iron and inevitable impurity.
3. the manufacture method of high-strength automobile brake wheel hub according to claim 2 is characterized in that, the consisting of of described steel material (in % by weight):
0.27% carbon;
0.60% tellurium;
0.10% phosphorus;
0.16% sulphur;
0.80% silicon;
0.03% aluminium;
0.005% nitrogen;
0.57% chromium;
0.05% niobium;
0.30% copper;
0.55% europium;
1.00% molybdenum;
0.3% vanadium;
0.0085% ytterbium;
0.035% titanium:
All the other are iron and inevitable impurity.
CN 201310311164 2013-07-22 2013-07-22 Manufacturing method of high-strength automobile brake hub CN103350331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201310311164 CN103350331A (en) 2013-07-22 2013-07-22 Manufacturing method of high-strength automobile brake hub

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201310311164 CN103350331A (en) 2013-07-22 2013-07-22 Manufacturing method of high-strength automobile brake hub

Publications (1)

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CN103350331A true CN103350331A (en) 2013-10-16

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104087832A (en) * 2014-06-06 2014-10-08 马鞍山市恒毅机械制造有限公司 Method of preparing automobile wheel hub bearing unit from niobium microalloyed steel
CN104087871A (en) * 2014-06-06 2014-10-08 马鞍山市恒毅机械制造有限公司 A preparing method of a Cu-containing low-alloy steel automobile wheel hub bearing unit
CN104128743A (en) * 2014-06-16 2014-11-05 内蒙古华唐都瑞轮毂有限公司 Low-pressure cast spinning short process of aluminum alloy hubs
CN106311848A (en) * 2016-11-08 2017-01-11 浙江跃岭股份有限公司 Rotary pressing technology for high-strength lightweight aluminum alloy hub
CN107020482A (en) * 2016-01-29 2017-08-08 诺德科技股份有限公司 Strength extrusion-processing technology for aluminum-alloy wheel casting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104087832A (en) * 2014-06-06 2014-10-08 马鞍山市恒毅机械制造有限公司 Method of preparing automobile wheel hub bearing unit from niobium microalloyed steel
CN104087871A (en) * 2014-06-06 2014-10-08 马鞍山市恒毅机械制造有限公司 A preparing method of a Cu-containing low-alloy steel automobile wheel hub bearing unit
CN104128743A (en) * 2014-06-16 2014-11-05 内蒙古华唐都瑞轮毂有限公司 Low-pressure cast spinning short process of aluminum alloy hubs
CN107020482A (en) * 2016-01-29 2017-08-08 诺德科技股份有限公司 Strength extrusion-processing technology for aluminum-alloy wheel casting
CN106311848A (en) * 2016-11-08 2017-01-11 浙江跃岭股份有限公司 Rotary pressing technology for high-strength lightweight aluminum alloy hub

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Application publication date: 20131016