CN109017186A

CN109017186A - The split type V-type distance rod of aluminium alloy and its casting and forming and agitating friction are welded method of completing the square

Info

Publication number: CN109017186A
Application number: CN201811006527.XA
Authority: CN
Inventors: 张虎; 张花蕊
Original assignee: Beijing Hang Da Xin Wood Technology Co Ltd
Current assignee: Beijing Hang Da Xin Wood Technology Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2018-12-18

Abstract

It is welded method of completing the square the invention discloses a kind of split type V-type distance rod of aluminium alloy and its casting and forming and agitating friction, the distance rod material is aluminium alloy, preferred ingredient is Al-Cu alloy, Al-Si alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and the aluminium alloy of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr is added in above-mentioned acieral.The split type V-type distance rod of the aluminium alloy is made of casing, bulb and flexural pivot, and by casing connection between V-arrangement bulb and both ends bulb, flexural pivot is mounted in the through-hole of bulb；The neck of bulb is ellipse and the arc-shaped combination being combined, and improves bearing capacity.The aluminium alloy distance rod bulb is prepared using cast shaping process.Aluminium alloy casing is welded with bulb using agitating friction or friction welding technological is assembled.Gained distance rod of the invention can reach 40~70% compared to the distance rod weight loss effect of traditional steel material.

Description

The split type V-type distance rod of aluminium alloy and its casting and forming are welded with agitating friction and match Method

Technical field

The present invention relates to automobile V-arrangement distance rod more particularly to a kind of aluminium alloy lightweight distance rod and preparation method thereof, And the assembly method of distance rod.

Background technique

In face of the pressure of environmental protection and energy-saving and emission-reduction, automotive light weight technology has become the inevitable choice of Automobile Design update. In truck field, the gross mass of truck is the summation of carload lot and vehicle body from weight, and traffic law is to gross weight Amount is distinctly claimed, overweight to bring security risk and traffic violation.Therefore as transportation environment mentions vehicle needs Height, in order to improve transportation profit, the lightweight of truck components has become problem in the urgent need to address.

Distance rod is one of the critical component of truck balanced suspension, air suspension, is divided into straight distance rod (or for I Shape distance rod) and V-type distance rod, in running car power transmission, limit, vibration isolation, play in terms of mitigate it is vital Effect.Generally, distance rod is made of casing, bulb and flexural pivot.

Most of bogie traveling road conditions are poor, loading conditions are poor, use environment is severe, vehicle use intensity is big, as outstanding Frame system plays the distance rod of key effect, and operating condition is complicated, is acted on by multi-load, is easy to cause fatigue damage.Mesh Forward thrust bar is generally steel or cast iron quality, such as 45 steel, 20 steel, 40Cr material, and weight is larger, and it is further to be unsatisfactory for automobile Light-weighted demand.Under the pressure of current energy conservation and environmental protection loss of weight, how on the basis of guaranteeing that distance rod service performance requires, Weight is reduced as far as possible, is realized the lightweight of distance rod, is of great significance to truck.There is part of the manufacturer to pass through at present Change the structure design of steel material distance rod, for example its partial structurtes is designed as hollow, but since material is constant, design is empty Between it is small, light weight effect is unobvious, and local hollow structure increases moulding process difficulty and manufacturing cost, therefore cannot be wide General popularization and application.

Summary of the invention

For the problem of the big light weight effect difference of existing steel material distance rod weight, the object of the present invention is to provide a kind of new Type lightweight V-arrangement distance rod, the V-arrangement distance rod are made of aluminum alloy materials.In order to enable aluminum alloy to distance rod in running car Have receiving multi-load when power transmission, limit, vibration isolation, mitigation impact to act on and meet the ability of high fatigue life, the present invention couple Aluminium alloy distance rod has carried out structure design, and develops the casing of achievable distance rod high performance requirements and the processing work of bulb Skill and assembly technology, to obtain Novel lightweight distance rod of the invention.Aluminium alloy bulb, V-arrangement bulb are used and be cast as Type, casing are prepared using extrusion forming, and aluminium alloy bulb obtained and casing application friction welding (FW) or agitating friction are welded and are matched, institute Aluminium alloy distance rod is obtained compared with traditional steel material distance rod, not only there is comparable bearing capacity, also farthest realize Lightweight, weight loss effect is up to 40~70%.

A kind of split type V-type distance rod of aluminium alloy of the invention, ingredient are Al-Cu alloy, Al-Si alloy, Al- Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and in above-mentioned acieral add Sr, La, The aluminum alloy material of the micro-alloying elements such as Ce, Y, Sc, Er, Nb, B, Cr.

A kind of split type V-type distance rod of aluminium alloy of the invention, is made of, V-arrangement bulb and two casing, bulb and flexural pivot It holds between bulb by casing connection, flexural pivot is mounted in the through-hole of bulb；Wherein, the split type V-type thrust bar body packet of aluminium alloy Casing, bulb, V-arrangement bulb and flexural pivot are included；

A casing 1 is an integral molding structure part；

B casing 10 is an integral molding structure part；

The other end that an end face of A bulb 2A is A aperture end plates 2A3A, A bulb 2A is A macropore end plates 2A3B； BA linkage section 2A3 is connect with 1 one end of A casing by friction welding (FW)；The neck of A bulb 2A is equipped with A ellipse section 2A5 and A arc section 2A6；

The other end that an end face of B bulb 2B is B aperture end plates 2B3A, B bulb 2B is B macropore end plates 2B3B； BB linkage section 2B3 is connect with 10 other end of B casing by friction welding (FW)；The neck of B bulb 2B is equipped with B ellipse section 2B5 and B circular arc Section 2B6；

A bulb 2A is identical as the structure of B bulb 2B, and A bulb 2A and B bulb 2B is an integral molding structure part.

V-arrangement bulb 3 is equipped with A support arm 3A, B support arm 3B and C flexural pivot mounting base 3C；It is CA in the middle part of C flexural pivot mounting base 3C Through-hole 3C1, CC through-hole 3C1 is for placing a flexural pivot.The other end of A casing 1 is installed on A support arm 3A.It is equipped on B support arm 3B The other end of B casing 10.

The split type V-type distance rod bulb of aluminium alloy of the invention and V-arrangement bulb can be used casting method and prepared, work Skill are as follows:

Casting step one prepares aluminium alloy according to certain proportion, heats matched aluminium alloy in casting machine holding furnace To certain temperature, and carry out refining degasification；

Casting step two preheats bulb or V-arrangement bulb special die and sprue bush；The cast gate of stalk is carried out Scarfing cinder is put into foam ceramic filter and type core, and type core used can be metal material type core, can be sand mold type core；Molding.

Casting step three under a certain pressure by the aluminum alloy melt in holding furnace carries out a liter liquid with given pace；

Casting step four under a certain pressure by aluminium alloy fills type into bulb or V-arrangement bulb-shaped chamber with certain speed, Until type chamber is completely filled with；

Casting step five quicklys increase pressure to crystallization pressure, and after continuation of insurance after molten aluminum is completely filled with bulb-shaped chamber Pressure；

Casting step six, finishes to the solidification of aluminium alloy bulb, and the gas pressure in removal holding furnace after cooling and takes out ball Head or V-arrangement bulb casting.

The split type V-type distance rod of aluminium alloy of the invention can be used friction stir welding method and be assembled, it is characterised in that Include the following steps:

Bulb, V-arrangement bulb and casing connection position are processed into and the same wall thickness of casing by installation step one according to design size Pipe structure；

Bulb, V-arrangement bulb and casing are fixed on numerical control friction stir welding machine welding fixture special by installation step two；

Installation step three sets friction stir welding machine mixing needle revolving speed and weldering speed；

Installation step four, starts friction stir welding machine, and mixing needle protrudes into bulb, V-arrangement bulb and casing while rotating Seam in, the mixing needle shaft shoulder and bulb and sleeve surface friction-stir heat are plasticized aluminum alloy heat to be welded, and in stirring-head It under rotation traction traction effect, is shifted from the front to the back around stirring-head, realizes the solid diffusivity of bulb, V-arrangement bulb and casing；

Installation step five, distance rod unclamp fixture after being welded successfully, take out distance rod, carry out size, crack defect to it Detection.

The split type V-type distance rod of aluminium alloy of the invention can be used friction welding method and be assembled, it is characterised in that including There are the following steps:

Bulb, V-arrangement bulb and casing connection position are processed into and the same wall thickness of casing by installation step A according to design size Pipe structure；

Bulb, V-arrangement bulb and casing are fixed on numerical control friction stir welding machine welding fixture special by installation step B；

Installation step C sets friction stir welding machine mixing needle revolving speed and weldering speed；

Installation step D, starts friction stir welding machine, and mixing needle protrudes into bulb, V-arrangement bulb and casing while rotating In seam, the mixing needle shaft shoulder is plasticized aluminum alloy heat to be welded with bulb and sleeve surface friction-stir heat, and revolves in stirring-head Turn under draw, shifted from the front to the back around stirring-head, realizes the solid diffusivity of bulb, V-arrangement bulb and casing；

Installation step E, distance rod unclamp fixture after being welded successfully, take out distance rod, and size, crack defect inspection are carried out to it It surveys.

The present invention has the advantages that

1. the distance rod is aluminum alloy material, preferred component can be Al-Cu alloy, Al-Si alloy, Al- Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and in above-mentioned acieral add Sr, La, The aluminium alloy of the micro-alloying elements such as Ce, Y, Sc, Er, Nb, B, Cr stretches by force compared to the distance rod of steel material meeting Under conditions of the service performances such as degree, fatigue strength, weight loss effect can reach 40~70%；And aluminium alloy distance rod ingredient is easy control System.

2. the structure of the aluminium alloy distance rod not only ensure that the high-performance of distance rod but also realize lightweight, and designed Structure be easy preparation, the aluminium alloy distance rod intensity of this kind of structure of gained is high, under the conditions of 200~300KN high loading stress Nothing pulls and breakoff phenomenon, can meet performance requirement high when distance rod practical application.

3. the distance rod is split type aluminium alloy distance rod, casting and molding method system is can be used in bulb, V-arrangement bulb Standby, simple process, controllable degree is high, and distance rod performance obtained by high yield rate is high.

4. aluminium alloy bulb, V-arrangement bulb and casing can be rapidly completed and be pushed away by friction welding (FW) or agitating friction weldering connection The bulb of power bar and the precise riveting of casing, not only ensure that riveting quality but also had improved work efficiency.

Detailed description of the invention

Fig. 1 is the structure chart of the rubbed V-type distance rod after matching that is welded of the present invention.

Figure 1A is another viewing angle constructions figure of the rubbed V-type distance rod after matching that is welded of the present invention.

Figure 1B is the facing structure figure of V-type distance rod of the present invention.

Fig. 1 C is the rearview of Figure 1B.

Fig. 1 D is the top view of Figure 1B.

Fig. 1 E is the bottom view of Figure 1B.

Fig. 1 F is the left view of Figure 1B.

Fig. 1 G is the right view of Figure 1B.

Fig. 2 is the structure chart using V-arrangement bulb of the present invention made from forging technology.

Fig. 2A is another viewing angle constructions figure using V-arrangement bulb of the present invention made from forging technology.

Fig. 2 B is the front view using V-arrangement bulb of the present invention made from forging technology.

Fig. 3 is the front view of middle sleeve of the present invention.

Fig. 3 A is the right view of Fig. 3.

Fig. 3 B is the LOOK RIGHT structure chart of middle sleeve of the present invention.

Fig. 3 C is the LOOK LEFT structure chart of middle sleeve of the present invention.

Fig. 3 D is another structural casing structure chart in the present invention.

Fig. 3 E is another another viewing angle constructions figure of structural casing in the present invention.

Fig. 4 is the front view using bulb of the present invention made from forging technology.

Fig. 4 A is the rearview of Fig. 4.

Fig. 4 B is the right view of Fig. 4.

Fig. 4 C is the left view of Fig. 4.

Fig. 4 D is the structure chart of bulb of the present invention.

Fig. 4 E is another viewing angle constructions figure of bulb of the present invention.

Fig. 4 F is the structural design drawing of bulb of the present invention.

Fig. 5 is the structure chart using another bulb of the present invention made from forging technology.

Fig. 6 is the mechanical property figure of distance rod in specific embodiment 1.

1. casing	1A.A through-hole	2A.A bulb
			2A2.BA through-hole	2A3.BA linkage section	2A3-1. upper profile sideline
2A3-2. bottom profiled sideline	2A3-3. left profile sideline	2A3-4. right wheel exterior feature sideline
			2A3A.A tapered panel	2A3B.A round panel	2A4.BA inner convex platform
2A5.A ellipse section	2A6.A arc section	2B.B bulb
			2B2.BB through-hole	2B3.BB linkage section	2B3A.B tapered panel
2B3B.B round panel	2B5.B ellipse section
			2B6.B arc section	3.V shape bulb	3A.A support arm
3B.B support arm	3C.C flexural pivot mounting base	3C1.CA through-hole
			4.C bulb	41. extension rod	42.D through-hole
43.C flexural pivot mounting base	45.C ellipse section	46.C arc section

Specific embodiment

Below in conjunction with drawings and examples, the present invention is described in further detail.

First part, the target component of aluminium alloy distance rod

In the present invention, aluminium alloy V-arrangement distance rod is aluminium alloy, and preferred component can be Al-Cu alloy, Al-Si It is alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and adds in above-mentioned acieral Add the aluminium alloy of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr.

Preferred distance rod ingredient one are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.1~1.5
Mg	0.4~2.0
		Fe	0.06~1.6
Cu	2.5~7.0
		Mn	0.2~1.2
Cr	0.001~0.15
		Ni	0.001~1.2
Zn	0.10~0.30
		Ti	0.01~0.20
Zr	0.001~0.25
		Sr	≤0.03
La	≤0.03
		Ce	≤0.03
Y	≤0.1
		Er	≤0.05
Sc	≤0.05
		Al	Surplus and inevitable impurity.

Preferred distance rod ingredient two are as follows:

Element	Dosage (mass percent, wt%)
		Si	4.5~13.5
Mg	0.05~0.8
		Fe	0.5~1.5
Cu	0.2~1.5
		Mn	0.05~0.6
Cr	0.001~0.2
		Ni	0.001~1.25
Zn	0.05~0.30
		Ti	0.01~0.25
Zr	0.001~0.05
		Sr	0.01~0.15
La	≤0.03
		Ce	≤0.03
Y	≤0.1
		Er	≤0.05
Sc	≤0.05
		Al	Surplus and inevitable impurity.

Preferred distance rod ingredient three are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.2~1.8
Mg	0.3~1.2
		Fe	0.1~0.8
Cu	0.1~0.4
		Mn	0.3~1.2
Cr	0.04~0.35
		Zn	0.10~0.30
Ti	0.01~0.20
		Zr	≤0.005
Sr	≤0.03
		La	≤0.03
Ce	≤0.03
		Y	≤0.1
Er	≤0.05
		Sc	≤0.05
Al	Surplus and inevitable impurity.

Preferred distance rod ingredient four are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.1~1.2
Mg	0.04~3.0
		Fe	0.08~1.0
Cu	0.1~3.0
		Mn	0.1~0.8
Cr	0.1~0.35
		Zn	4.0~8.0
Ti	0.001~0.20
		Zr	0.005~0.25
Sr	≤0.03
		La	≤0.03
Ce	≤0.03
		Y	≤0.1
Er	≤0.05
		Sc	≤0.05
Al	Surplus and inevitable impurity.

Preferred distance rod ingredient five are as follows:

Element	Dosage (mass percent, wt%)
		Si	0.3~0.6
Mg	2.0~10.5
		Fe	0.01~0.8
Cu	0.005~0.2
		Mn	0.05~1.2
Cr	0.001~0.35
		Zn	0.10~0.25
Ti	0.01~0.20
		Zr	0.001~0.30
Sr	≤0.03
		La	≤0.03
Ce	≤0.03
		Y	≤0.1
Er	≤0.05
		Sc	≤0.05
Al	Surplus and inevitable impurity.

Second part, the optimization structure of aluminium alloy thrust bar body

Referring to shown in Fig. 1, Figure 1A-Fig. 1 G, the V-arrangement thrust bar body that the present invention designs includes A casing 1, B casing 10, A Bulb 2A, B bulb 2B, V-arrangement bulb 3；The other end that one end of A casing 1 is equipped with A bulb 2A, A casing 1 is mounted on V-arrangement bulb On 3 A support arm 3A；The other end that one end of B casing 10 is equipped with B bulb 2B, B casing 10 is mounted on the B support arm of V-arrangement bulb 3 On 3B.The BA through-hole 2A2 of A bulb 2A is for installing a flexural pivot, and the BB through-hole 2B2 of B bulb 2B is for installing another flexural pivot, V-arrangement The CA through-hole 3C1 of bulb 3 is for installing the flexural pivot for meeting V-arrangement bulb 3.

A casing 1 is identical as the structure of B casing 10；A bulb 2A is identical as the structure of B bulb 2B.

Casing 1

Referring to shown in Fig. 1, Figure 1A~Fig. 1 D, Fig. 3, Fig. 3 B, Fig. 3 C, there is excellent structure in order to enable aluminum alloy to casing 1, Casing 1 is an integral molding structure part, and there is A through-hole 1A at the center of casing 1；The total length of casing 1 is denoted as L₁, the inside radius of casing 1 (i.e. the radius of through-hole 1A) is denoted as r_1A.Generally, L₁=420~810mm, r_1A=18~30mm.

In the present invention, casing 1 can be hollow structure (Fig. 3 B, Fig. 3 C), be also possible to solid construction (Fig. 3 D, figure 3E).Similarly, there is AB through-hole at the center of B casing 10, can be hollow structure, is also possible to solid construction.

Bulb 2A, 2B

Referring to shown in Fig. 1, Figure 1A-Fig. 1 G, Fig. 4, Fig. 4 A- Fig. 4 E, Fig. 5, A bulb 2A is identical as the structure of B bulb 2B, and A bulb 2A and B bulb 2B is an integral molding structure part.It is illustrated below with the structure of A bulb 2A.

End of the A bulb 2A equipped with BA through-hole 2A2, A bulb 2A is BA linkage section 2A3, and the BA linkage section 2A3 passes through Friction welding (FW) is connect with one end of A casing 1.Similarly, shown in Figure 1, B bulb 2B is equipped with the end of BB through-hole 2B2, B bulb 2B Portion is BB linkage section 2B3, and the BB linkage section 2B3 is connect by friction welding (FW) with the other end of B casing 10.

An end face of A bulb 2A is A aperture end plates 2A3A, in the end BA through-hole 2A2 close to A aperture end plates 2A3A Equipped with BA inner convex platform 2A4 (shown in Fig. 4 E), BA inner convex platform 2A4 is in contact with it after the entrance of big nose end for limiting a flexural pivot, is reached To the restriction of rigging position；The other end of A bulb 2A is A macropore end plates 2A3B.The BA at the end the A aperture end plates 2A3A Through-hole 2A2 is less than the BA through-hole 2A2 at the end the A macropore end plates 2A3B, and flexural pivot enters from BA through-hole 2A2, and is placed in BA through-hole It is limited in 2A2 and with BA inner convex platform 2A4, is mounted on flexural pivot on A bulb 2A.

It is A ellipse section 2A5 and A arc section 2A6 that the neck of A bulb 2A, which is equipped with,.Similarly, it is ellipse to be equipped with B for the neck of B bulb 2B Circle segments 2B5 and B arc section 2B6.In order to realize the high bearing capacity of aluminum alloy material distance rod, the A bulb that the present invention designs 2A neck structure feature is to meet shown in Fig. 4 F.In Fig. 4 F, the center of circle of the bottom of BA linkage section 2A3 is denoted as O, BA linkage section The radius of 2A3 is denoted as r_2A1(r_2A1=r_1A), in order to enhance the intensity of bulb binding site, devise enhancing locus circle and enhancing rail Mark is oval, and it is circular arc segment structure that the enhancing locus circle is corresponding, and it is oval section that the enhancing track is oval corresponding, The radius for enhancing locus circle is r₁, andThe enhancing elliptical major radius in track is denoted as Oa, Oa=(4.5 ~5.5) r_1A, enhance the elliptical short radius in track and be denoted as Ob, Ob=4r_1A.Auxiliary circle is drawn by radius of Oa；Second aspect, it is above Distance be cuts off to obtain the upper profile sideline 2A3-1 of A bulb 2A, and distance df cuts off to obtain the bottom profiled sideline of A bulb 2A below 2A3-2；Be is not equal to df；Auxiliary draws left profile sideline 2A3-3 and right wheel exterior feature sideline 2A3-4；The third aspect, with major radius Oa Auxiliary ellipse is drawn with short radius Ob, as oval section.

Another bulb (C bulb 4) structure that the present invention designs as shown in figure 5, C bulb 5 in addition to increasing on linkage section For extension rod 41 with a, remaining structure is identical with A bulb 2A.In the structure of C bulb 4, in addition to extension rod 41, referred to as C The C flexural pivot mounting base 33 of bulb 4, i.e. C bulb 4 include extension rod 41 and C flexural pivot mounting base 43.The C flexural pivot mounting base 43 It is equipped with the D through-hole 42 for installing a flexural pivot, the end face of extension rod 41 and one end of casing are connected using friction welding (FW), C bulb 4 Neck be equipped with C arc section 46 and C ellipse section 45.

The size that flexural pivot mounting base meets with bellows piece binding site in bulb is

In the present invention, the radius of arc section (2A6,2B6) is r₁, the major radius of oval section (2A5,2B5) is Oa, short Radius is Ob, then has,Oa=(4.5~5.5) r_1A, Ob=(3~4) r_1A。

V-arrangement bulb 3

Referring to shown in Fig. 1, Figure 1A, Fig. 2, Fig. 2A, Fig. 2 B, Fig. 4 E, V-arrangement bulb 3 is equipped with A support arm 3A, B support arm 3B and C Flexural pivot mounting base 3C；It is CA through-hole 3C1, CC through-hole 3C1 in the middle part of C flexural pivot mounting base 3C for placing a flexural pivot.V-arrangement bulb 3 On two support arms maximum radius and BA pipeline section 2A1 radius r_2A1It is identical.

The other end of A casing 1 is installed on A support arm 3A.

The other end of B casing 10 is installed on B support arm 3B.

Part III processes aluminium alloy V-arrangement thrust bar body

In the present invention, bulb and V-arrangement bulb are made of cast shaping process, specific steps are as follows:

Casting step one prepares aluminium alloy according to certain proportion, heats matched aluminium alloy in casting machine holding furnace To 700~760 DEG C, 30~45min of degasification is refined；

Bulb or V-arrangement bulb mold are preheating to 350~430 DEG C by casting step two, and sprue bush preheating temperature to 300~ 380℃；Scarfing cinder is carried out to the cast gate of stalk, is put into foam ceramic filter and type core, type core used can be metal material type core, It can be sand mold type core；Molding.

Casting step three, by the aluminum alloy melt in holding furnace under the pressure of 20~30kPa, with 2.0~3.0kPa/s's Speed carries out a liter liquid；

Casting step four fills type to ball with the speed of 2.1~4.0kPa/s by aluminium alloy under the pressure of 35~45kPa In head V-arrangement bulb-shaped chamber, until type chamber is completely filled with；

Casting step five quicklys increase pressure to 50~200kPa in 5~7s after molten aluminum is completely filled with bulb-shaped chamber, And continue 10~60s of pressure maintaining；

Casting step six, finishes to aluminium alloy bulb or the solidification of V-arrangement bulb, and the gas pressure in removal holding furnace is cooling Afterwards and take out bulb casting.

In the present invention, casing is made of hot extrusion technique, specific steps are as follows:

101 steps prepare aluminium alloy according to certain proportion, and aluminum alloy blank are heated in chamber type electric resistance furnace 380~520 DEG C, keep the temperature 30~60min；

Extrusion die temperature is heated to 400~500 DEG C, and keeps the temperature 10~30min by 102 steps, and blank is carried out hot extrusion It presses toPieces of bar stock；

Pieces of bar stock is processed into required hollow structure by punching or machining mode by 103 steps.

Part IV, the assembly of aluminium alloy V-arrangement thrust bar body

In the present invention, aluminium alloy bulb welds moulding process by agitating friction with aluminium alloy casing and is attached, specifically Include the following steps:

Bulb, V-arrangement bulb and casing connection position are processed into and the same wall thickness of casing by installation step A according to design size Structure；

Bulb, V-arrangement bulb and casing are fixed on the special welding fixture of numerical control friction stir welding machine by installation step B；

Installation step C sets friction stir welding machine mixing needle revolving speed as 800~2000rpm, and weldering speed is 100~250mm/ min；

In the present invention, aluminium alloy bulb is attached with aluminium alloy casing by friction welding (FW) moulding process, is specifically included The following steps:

Aluminium alloy bulb, V-arrangement bulb and aluminium alloy casing are attached by friction welding (FW) moulding process, are specifically included following Step:

The knot than covering 0.2~0.5mm of the thickness of pipe is processed into bulb, V-arrangement bulb and casing connection position by installation step one Structure；

Bulb, V-arrangement bulb are fixed on friction-welding machine power spindle, step up to cover using special fixture by installation step two Pipe；

Installation step three works out the PLC control program of friction welding apparatus, sets welding condition, and 1 grade of friction pressure is 0.5~4MPa, fraction time are 5~10s, set 2 grades of friction pressures as 1~6MPa, fraction time is 9~15s, setting friction Welding machine revolving speed is 300~1000rpm；

Installation step four starts friction-welding machine, moves bulb, V-arrangement bulb high speed rotation and along slide plate on power head Close to casing, frictional heat generation when casing is contacted using end high speed rotation, enables aluminum alloy to soften, while on power spindle head Apply the upsetting force of 7~16MPa, upset time is 3~15s, and bulb, V-arrangement bulb and casing is made to realize solid diffusivity；

Embodiment 1

The ingredient of bulb and V-arrangement bulb in embodiment one are as follows:

Element	Dosage (mass percent, wt%)
		Si	8.0
Mg	0.6
		Fe	0.2
Cu	1.5
		Mn	0.4
Cr	0.08
		Ni	0.01
Zn	0.2
		Ti	0.16
Zr	0.03
		Sr	0.15
Y	0.02
		Ce	0.02
Al	Surplus and inevitable impurity.

The ingredient of one middle sleeve of embodiment are as follows:

Element	Dosage (mass percent, wt%)
		Si	1.0
Mg	1.8
		Fe	0.5
Cu	6.0
		Mn	0.9
Cr	0.1
		Ni	0.1
Zn	0.1
		Ti	0.15
Zr	0.05
		Sr	0.01
Al	Surplus and inevitable impurity.

The total length L of casing 1₁=810mm, the inside radius r of casing 1_1A=30mm；The linkage section radius r of bulb 2A_2A1= 30mm；The radius of bulb neck arc section (2A6,2B6) isOval section (2A5,2B5) Major radius is Oa=135mm, short radius Ob=90mm.

In embodiment 1, cast shaping process production, specific steps are respectively adopted in bulb and V-arrangement bulb are as follows:

Casting step one prepares aluminium alloy according to certain proportion, heats matched aluminium alloy in casting machine holding furnace To 745 DEG C, degasification 45min is refined；

Bulb or V-arrangement bulb mold are preheating to 400 DEG C by casting step two, and sprue bush preheating temperature is to 380 DEG C；To liter The cast gate of liquid pipe carries out scarfing cinder, is put into foam ceramic filter and type core, type core used can be metal material type core, can be sand mold Type core；Molding.

Casting step three is risen by the aluminum alloy melt in holding furnace under the pressure of 26kPa with the speed of 2.6kPa/s Liquid；

Casting step four fills type to bulb or V-arrangement ball with the speed of 4.0kPa/s by aluminium alloy under the pressure of 42kPa In head dummy chamber, until type chamber is completely filled with；

Casting step five quicklys increase pressure extremely in 5s after molten aluminum is completely filled with bulb or V-arrangement bulb-shaped chamber 150kPa, and continue pressure maintaining 30s；

In embodiment 1, casing uses hot extrusion molding, specific steps are as follows:

Step 1 prepares aluminium alloy according to certain proportion, and aluminum alloy blank is heated to 500 in chamber type electric resistance furnace DEG C, keep the temperature 30min；

Extrusion die temperature is heated to 480 DEG C, and keeps the temperature 30min by step 2, by blank be hot extruded into forPieces of bar stock；

Pieces of bar stock is processed into required hollow structure by punching or machining mode by step 3.

The assembly of aluminium alloy V-arrangement thrust bar body

Aluminium alloy bulb welds moulding process by agitating friction with aluminium alloy casing and is attached, and specifically includes following step It is rapid:

Installation step C, sets friction stir welding machine mixing needle revolving speed as 1000rpm, weldering speed 150mm/min；

The performance test of aluminium alloy thrust bar body

In the present invention, it will be filled through aluminium alloy casing made from Part III, bulb and V-arrangement bulb according to Part IV It is made into aluminium alloy thrust bar body.Mechanical property survey is carried out to it using 45.105 type microcomputer controlled electronic universal tester of MTS Examination, stress-strain result are shown in Fig. 6, it is seen that average tensile strength 500MPa, the yield strength 407.75MPa of designed distance rod, Elongation percentage 12.6% can meet actual use intensity requirement.

Distance rod assembly carries out pull-off test detection after the assembly is completed, using MTS universal testing machine, applies in distance rod The tensile load of 250KN, the results showed that do not occur in place of bulb and casing riveting place, V-arrangement bulb and casing riveting opposite Sliding, does not occur easily pulling phenomenon.

Distance rod assembly carries out fatigue test detection after the assembly is completed, using electo hydraulic servocontrolled fatigue testing machine, and loading force is 150KN, loading frequency 1.5HZ are recycled 1,200,000 times, the results showed that V-type distance rod does not occur phenomenon of rupture, tests forward and backward rigid Degree variation is no more than 30%, illustrates that distance rod fatigue life is preferable.

Claims

1. a kind of split type V-type distance rod of aluminium alloy, it is characterised in that: the ingredient of VV type distance rod is Al-Cu alloy, Al- Si system alloy, Al-Mg-Si system alloy, Al-Zn-Mg-Cu system alloy or Al-Mg alloy, and in above-mentioned acieral Add the aluminum alloy material of the micro-alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, Cr.

2. according to the material of the split type V-type distance rod of aluminium alloy described in claim V, it is characterised in that distance rod ingredient are as follows:

3. according to the material of the split type V-type distance rod of aluminium alloy described in claim V, it is characterised in that distance rod ingredient are as follows:

4. according to the material of the split type V-type distance rod of aluminium alloy described in claim V, it is characterised in that distance rod ingredient are as follows:

5. a kind of split type V-type distance rod of aluminium alloy, is made of casing, bulb and flexural pivot, between V-arrangement bulb and both ends bulb By casing connection, flexural pivot is mounted in the through-hole of bulb；It is characterized by: the split type V-type thrust bar body of aluminium alloy includes Casing, bulb, V-arrangement bulb and flexural pivot；

A casing 1 is an integral molding structure part；

B casing 10 is an integral molding structure part；

The other end that an end face of A bulb 2A is A aperture end plates 2A3A, A bulb 2A is A macropore end plates 2A3B；BA connects It meets section 2A3 and is connect with 1 one end of A casing by friction welding (FW)；The neck of A bulb 2A is equipped with A ellipse section 2A5 and A arc section 2A6；

The other end that an end face of B bulb 2B is B aperture end plates 2B3A, B bulb 2B is B macropore end plates 2B3B；BB connects It meets section 2B3 and is connect with 10 other end of B casing by friction welding (FW)；The neck of B bulb 2B is equipped with B ellipse section 2B5 and B arc section 2B6；

V-arrangement bulb 3 is equipped with A support arm 3A, B support arm 3B and C flexural pivot mounting base 3C；It is CA through-hole in the middle part of C flexural pivot mounting base 3C 3C1, CC through-hole 3C1 are for placing a flexural pivot.The other end of A casing 1 is installed on A support arm 3A.B set is installed on B support arm 3B The other end of pipe 10.

6. the split type V-type distance rod of aluminium alloy according to claim 5, it is characterised in that: the total length of casing 1 is L₁, set The inside radius of pipe 1 is r_1A, the radius of bulb 2A is denoted as r_2A1；The radius of arc section (2A6,2B6) is r₁, oval section (2A5, Major radius 2B5) is Oa, short radius Ob, then has,Oa=(4.5~5.5) r_1A, Ob=(3~4) r_1A。

7. the split type V-type distance rod of aluminium alloy according to claim 5, it is characterised in that: casing (1,10) is solid knot Structure is hollow structure.

8. the split type V-type distance rod bulb of aluminium alloy and V-arrangement bulb can be used casting method and prepared, technique are as follows:

Casting step one prepares aluminium alloy according to certain proportion, matched aluminium alloy is heated to one in casting machine holding furnace Determine temperature, and carries out refining degasification；

Casting step two preheats bulb or V-arrangement bulb special die and sprue bush；The cast gate of stalk is carried out clear Slag is put into foam ceramic filter and type core, and type core used can be metal material type core, can be sand mold type core；Molding.

Casting step five quicklys increase pressure to crystallization pressure, and continue pressure maintaining after molten aluminum is completely filled with bulb-shaped chamber；

Casting step six finishes, the gas pressure in removal holding furnace to the solidification of aluminium alloy bulb, after cooling and take out bulb or V-arrangement bulb casting.

9. the split type V-type distance rod of aluminium alloy can be used friction stir welding method and be assembled, it is characterised in that include following Step:

The pipe with casing with wall thickness is processed into according to design size in bulb, V-arrangement bulb and casing connection position by installation step one Structure；

Installation step four, starts friction stir welding machine, and mixing needle protrudes into connecing for bulb, V-arrangement bulb and casing while rotating In seam, the mixing needle shaft shoulder is plasticized aluminum alloy heat to be welded with bulb and sleeve surface friction-stir heat, and rotates in stirring-head It under draw, is shifted from the front to the back around stirring-head, realizes the solid diffusivity of bulb, V-arrangement bulb and casing；

Installation step five, distance rod unclamp fixture after being welded successfully, take out distance rod, and size, crack defect detection are carried out to it.

10. the split type V-type distance rod of aluminium alloy can be used friction welding method and be assembled, it is characterised in that include following step It is rapid:

The pipe with casing with wall thickness is processed into according to design size in bulb, V-arrangement bulb and casing connection position by installation step A Structure；

Installation step D, starts friction stir welding machine, and mixing needle protrudes into the seam of bulb, V-arrangement bulb and casing while rotating In, the mixing needle shaft shoulder is plasticized aluminum alloy heat to be welded with bulb and sleeve surface friction-stir heat, and leads in stirring-head rotation Draw under effect, shifted from the front to the back around stirring-head, realizes the solid diffusivity of bulb, V-arrangement bulb and casing；

Installation step E, distance rod unclamp fixture after being welded successfully, take out distance rod, and size, crack defect detection are carried out to it.