JPS60102262A - Production of fiber reinforced composite member - Google Patents

Abstract

PURPOSE:To prevent generation of an unpacked composite part in the stage of producing a fiber reinforced composite member by a high pressure solidifying and casting method by pressurizing first the molten metal near the end further from the sprue of the fiber molding then pressurizing the molten metal near the end in proximity to the sprue. CONSTITUTION:A sprue 3 and a cavity 4 are communicated with the mating faces of a casting mold M and one end of a fiber molding F is press-fitted and fixed into the groove 7 at the tip of a core 6. After the molten metal supplied from a hopper 10 into the sprue 3, the molten metal is sealed by a plunger 11 and thereafter the molten metal in the mold M is primarily pressurized by a plunger 12. The molten metal near the end further from the sprue 3 of the molding F is then pressurized under prescribed pressure by a locally pressurizing punch 132 at the point of the time when the molten metal solidifies half. The molten metal near the end in proximity to the sprue 3 of the molding F is similarly pressurized by a punch 131 after prescribed time so that the molten metal is uniformly packed and combined in and with the fiber molding over the entire length thereof. The generation of the unpacked composite part in the fiber molding is thus prevented.

Description

[Detailed description of the invention] The present invention relates to a method for manufacturing a fiber-reinforced composite member.

The applicant first connects one longitudinal end to hot water,
A reinforcing rod-shaped fiber molded body is placed in the middle part of the fiber molded body (the hollow cavity is filled with molten metal, and then hot water is pressurized with high hydrostatic pressure in the vicinity of both filling parts of the fiber molded body). We have proposed a manufacturing method for fiber 1-reinforced fractured part 4] applying the high-pressure coagulation vj manufacturing method, which is filled and bound (qPj - Gansho 57-17 + 3687 吋士 1j ii) 3
, The above method (l'cj-beam, after filling the cavity with soybean, it is in a semi-solidified state): V: Runo f,'
4 gives it a hydrostatic high pressure, close to the hot water / 1-1-yang 0.1, and from the sprue it is kept a,',
Because it receives the f+ effect, it is difficult for the crystals to fall, and the temperature of the hot water drops more easily because it does not receive the heat retaining effect than the molten water 1, which is on the faster side than the force field 1. Since the time required for the molten metal to reach a semi-solidified state near both ends of the body is different, if both ends of the fiber molded body are pressurized at the same time, the molten metal cannot be evenly charged and mixed over the entire length of the fiber molded body. There is a risk that an unfinished 'fR15 joint may occur inside the fiber molded article.

The present invention eliminates the above-mentioned problems.1) Manufacturability a.
The purpose is to first pressurize the molten metal near the end of the fiber molded body far from the sprue, and then pressurize the molten metal near the end of the fiber molded body near the sprue. It has characteristics.

Hereinafter, the present invention will be explained with reference to the drawings with reference to one embodiment in which the present invention is applied to the production of a conorot for an internal combustion engine in which a rod WiB is fiber-reinforced. In Fig. 2, A and f are molds for high-pressure solidification vj making, which consist of a fixed lower mold 1 and the lower mold 1.
It consists of an upper mold 2 that can be raised and lowered relative to the upper mold 2, and a large-volume sprue 3 and a stove molded piece cavity 4 are formed from the mating surfaces of both molds 1 and 2 from the left side of the figure (114L). The cavity 4 has a large-volume large-end molded part 4a located at one end in the longitudinal direction and connected to the sprue 3 via a gate 5, and a small end with a small volume located at the other end in the longitudinal direction. part molded part 4b, and both parts 4a.

It consists of a rod molded part 4C with a small cross section that communicates with 4h.

The lower mold 1 is provided with a piston pin hole 1.11-1'-6 whose tip end is inserted into the small end molding part 4b, and a piston pin hole is formed at the tip f11 of the core 6. In step 7, one end of the rod-shaped fiber molded body p is press-fitted and fixed, and the molded body supported by that end is extended into the rod molded part 4C. There is. The fiber molded article 1'□ was molded to a desired bulk density using Stenosos 1 and paper (7)
Or use long fiber glue from other gods (!)
Ru.

A molten metal supply pipe 8 is connected to the hot water 1] 3 towards the sprue 3'
It is connected so that it slopes downward. There are several hoppers 10 in the molten metal supply pipe 8, and the molten metal is 10.
The molten metal can be supplied to the sprue 3 via the molten metal supply pipe 8. A seal plunger 11 that seals the inside of the pipe 8 after feeding the molten metal to the sprue 3 is slid onto the molten metal supply pipe 8.

The lower mold 1 is provided with a slidable plunger 12 and a first punch 13, the tip of which is inserted into the sprue 3 and the large end molding part 4σ, respectively. Again”-
The mold 2 includes a second mold whose tip part is inserted into the small end molding part 4b.
Local pressure) is provided at the edge 13 □ force 1 sliding mechanism [.

When forming a conlot vj, after molten metal made of aluminum alloy is supplied to the sprue 3, the inside of the molten metal supply port 8 is sealed by a seal bra/puya 11. Next (・te, branya 12
After raising the temperature and filling the cavy gooey 4 with bath water, the molten metal is firstly pressurized to a pressure of about 600 kg/cni.

Then, the molten metal is held under the pressure for 1 to 10 seconds, and when the molten metal becomes semi-solidified, both local pressure punches 13. ．． 1
3□ etc., the molten metal is pressurized with high hydrostatic pressure, but since the molten metal in the large end forming part 4a receives heat retention from the sprue 3 which has a large volume, the temperature of the molten metal is difficult to drop. Since the molten metal in the forming part 4h is not subjected to the heat insulation effect by the hot water 1]3, the temperature of the hot water tends to drop, and therefore, after a predetermined period of time, both local pressure punches 13. ,13. ．． If both are operated at the same time, the molten metal cannot be evenly filled and heated over the entire length of the fiber molded body P''.

After filling the molten metal, the molten metal was held under pressure for a period of time, and then the second local pressure batch 1.32 was used to increase the pressure to The molten metal in the large end forming part 4b is pressurized, and two seconds after the start of the pressurization, the first local pressure punch 13 pressurizes the molten metal in the large end forming part 4σ with the same pressure, and at the same time, the granular 12 increases the pressure to 1000 to 100 liters. 20 okgAyrff
Pressurize the sprue 3 with i and pressurize the three sprues 12, 13. ．． 13. ,
A secondary pressurization is performed, and the molten fiber molded body 1'' is evenly charged and composited over the entire length, and the molten VC is completely solidified under this pressurized state.

Thereafter, the cast body was released from the mold and subjected to machining according to the J setting. Crowd 'II; Part i not shown in Figure 1
4a, a connecting rod 14 consisting of a small end 14A and a fiber-reinforced ring part 14r connecting both 14a and 14A is obtained.

Fifth. FIG. 6 shows a cross section of the culm 14c with a fiber-reinforced portion made of L-shaped stainless steel fibers 11.・Optical micrograph 4'1 of aluminum alloy 1p body j'9ij on its outer periphery
．． ．． (+o.

1), and the dotted parts in Fig. 5 are made of stainless steel.
In lrMijl, the fibers are completely loaded by aluminum alloy, and this (rtX,,I
, the filling properties of the molten metal to the fiber molded body 1'' are good.
It turns out that f. Also, from FIG. 6, it can be seen that there are no shrinkage cavities in the aluminum/cum alloy m-body part.

Note that the present invention is not limited to conrods, but can be applied to the production of long fiber-reinforced composite parts.

As described above, according to the present invention, the molten metal near the end of the fiber molded body far from the sprue is first pressurized, and then the molten metal is pressurized to 1ji+, which lowers the temperature of the molten metal to -4= below the required level. After checking that the fiber molded body is completely filled, pressurize the molten metal near the end of the fiber molded body near the sprue.
It is possible to lower the temperature of the hot water to the optimum g, and use the shooting field to make a fiber-combined molded product.

As a result, the molten metal is evenly distributed over the entire length of the fiber molded body υ
'J is a high-quality material that prevents the occurrence of unfinished collapse joints inside the molded body and does not cause shrinkage cavities in the single metal parts. Na A, J & Tadasu 4
Enhanced rice table F, "If you can kidnap ↓J.

[Brief explanation of the drawing]

'A'S I
1--1-1 arrow view 5. lj'>'J is a plan view of the conorot; 4:> 4 is a sectional view taken along the line IV-IV in FIG. , Figure 0 is a rod) ηIs 1
j11" (This is a 113 minute yC microscopic photograph of a single metal in cross section. t'' - Cable adult body, 3... Audience [1, 4... Cavity, 12... Plunger, 13..13.i...i4
C1. 2nd game H% power November 2nd season/'chi 4Q, 1:'l' flth f! 11 people Book 1-Old Building lJ
l2J Nigyo Co., Ltd. Figure 3 Figure 4 Figure 1 Figure 214

Claims (1)

[Claims] Lightly pour the molten metal into a key with one longitudinal end communicating with a sprue and a reinforcing rod-shaped fiber molded body installed in the middle, and then pour still water into the center near both ends of the fiber molded body. Commercial coagulation: "J:i" is a commercial coagulation method in which the fiber molded body is filled with "Ji" by applying high pressure.
i!・i・°(Ryu Jj method ゛(,・, first ni
Pressurize the bath water near the end i of the +'Iii recorder 1'' upper bath 1 of the i-grade yarn 11 molded body, and then (・te[)1■
i# Near the end of the molded body near the nit sprue σ) ])
Production method of A (fiber-reinforced composite material characterized by applying pressure to the bottom) A6.