JPS587936B2 - Netsukanta Atsushi Kenki - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hot pressure tester.

When testing the hot pressure resistance of a sample, it is desirable to be able to test multiple samples in succession, mainly to increase thermal efficiency, and furthermore, the samples that have completed the test should be tested immediately to avoid the effects of subsequent heat. It is desirable to be able to move it outside the furnace body.

This invention was developed based on the above consideration, and according to the drawings, 1 is an electric furnace fixed to a frame 5, 2 is a heating element thereof, and 3 is a support shaft 4 approximately in the center inside this heating element 2. A holder 7 made of SiC, for example, holding a sample 6 is held in a plurality of thumbscrew head-shaped locking holes 3a provided radially at equal intervals near its outer periphery. Locked and fixed.

This holder 7 is provided with a pair of protrusions 7a, 7a, and when both are rotated 90 degrees, the protrusions 7a, 7a pass downward through a pair of insertion grooves 3b, 3b provided in the locking hole 3a. It is designed to come off and be removed from the locking hole 3a.

One side of the support shaft 4 is housed in a small-diameter tube 24 fixed to the furnace body 1 and secretly extends to the outside of the furnace body 1, and a worm gear 8 is fixed approximately at the center thereof.

A part of this worm gear is a window 24 provided in a small diameter pipe 24.
It is exposed to the outside from a.

9 is an upper punch rod inserted into the furnace body 1 from above in a confidential manner, and 11 is a load cell.

10 is a lower punch rod inserted into the furnace body 1 from below in a confidential manner, and 12 is a cylinder.

The upper and lower punch rods 9 and 10 are opposed to one of the locking holes 3a provided in the mounting table 3.

Reference numeral 13 denotes a sample chamber, which is attached to the furnace body 1 via a small diameter tube 15 and communicated with each other via a gate valve 14 attached to this small diameter tube 15.

Another mounting table 16 is supported substantially horizontally by a support shaft 17 inside the sample chamber 13 .

This mounting table 16 has a plurality of accommodation holes 16a bored at the same positions as the locking holes 3a of the mounting table 3, and is arranged so that the center of the acquisition holes 16a overlaps with a perpendicular line drawn from the center of the locking holes 3a. It is positioned.

A worm gear 18 having the same pitch as the worm gear 8 described above is fixed to an end of the support shaft 17 that extends upward through the sample chamber 13 .

19 is a sample upper and lower bar.

The sample upper and lower rods 19 are secretly inserted into the sample chamber 13 from the lower part thereof, and are designed to reach the inside of the furnace body 1 by passing through the intake hole 16a, the gate valve 14, and the small diameter pipe 15, respectively. The punch rods 9 and 10 are inserted into locking holes 3a adjacent to opposing locking holes 3a.

Further, the sample vertical bar 19 is configured to be freely moved up and down by a driving means 20 and rotated by 90 degrees.

21 is a drive motor, and a worm shaft 22 fixed to the rotating shaft of this motor is meshed with the worm gears 8 and 18.

Next, to explain the operation, first, the sample 6 may be locked and fixed in the locking hole 3a provided on the mounting table 3 after opening the furnace body 1, but in this embodiment, the sample chamber 13 Open and close the sample attachment/detachment door 13a with a viewing window on the mounting table 16 in the interior, attach the holder 7 carrying a plurality of samples 6 to each acquisition hole 16a, and leave the gate valve 14 open to open and close the sample attachment/desorption door 13a with a viewing window. It is configured to be moved one by one to the mounting table 3 within the furnace body 1 by means of a rod 19.

That is, the locking hole 3a of the mounting table 3 and the accommodation hole 16 of the mounting table 16
Since a and a are located in a position where they share the same axis and overlap,
The sample upper and lower rods 19 initially located below the acquisition hole 16a
is raised via the drive means 20, and the holder 7 carrying the sample 6 collected in the collection hole 16a is moved onto the mounting table 3 via the small diameter pipe 15.

Then, when the protrusions 7a, 7a of the holder 7 pass through the insertion grooves 3b, 3b of the locking hole 3a, it is stopped, and the sample upper and lower rods 1 are stopped.
9 is rotated 90 degrees via the drive means 20, the protrusion 7
a, 7a are locked into the locking hole 3a, the sample 6 is mounted on the mounting table 3 together with the holder 7.

Next, the sample vertical rod 19 is lowered to the outside of the receiving hole 16a of the mounting table 16, and when the drive motor 21 is driven to rotate the worm shaft 22 a certain number of times, it is engaged with the worm shaft 22. Worm gear 8 with the same pitch
．． 18 rotates, and the mounting tables 3 and 16 rotate by the same angle.

Then, the acquisition hole 16a into which the next holder 7 is attached is moved above the sample vertical bar 19, so the sample vertical bar 19 is raised and rotated again to place the next sample 6 together with the holder 7 on the mounting table 3.
Attach it on top.

Thereafter, by sequentially repeating the above-described operations, all the samples 6 on the mounting table 16 are moved onto the mounting table 3 together with the holder 7.

In this way, while lowering the sample vertical rod 19 to below the receiving hole 16a provided in the mounting table 16, the gate valve 14
After closing the furnace body 1 to create a desired gas atmosphere inside the furnace body 1, electricity is supplied to the heating element 2 to heat the inside of the furnace body 1 until the desired temperature is indicated by a thermocouple (not shown). A pressure test is performed by compressing the first sample 6 along with the holder 7 from above and below using rods 9 and 10.

Note that the pressure of the punch rod is indicated by the load cell 11.

Before and after this operation, the sample chamber 13 is filled with gas of the same type and pressure as the waste inside the furnace body 1.

When the pressure test for this first sample 6 is completed, the punch rods 9 and 10 are vertically separated within the furnace body 1, and in particular, the lower punch rod 10 slips out downward from the locking hole 3a.

Then, the mounting table 3 is rotated at a certain angle (that is, until the next sample faces the punch rods 9, 10), and the next sample 6 is again subjected to a pressure test using the upper and lower punch rods 9, 10.

In this way, the pressure resistance test is performed on the samples 6 successively mounted on the mounting table 3 one after another.

The gate valve 14 is opened around the time when the test on the first sample 6 is completed and the mounting table 3 automatically rotates to start the pressure test on the next sample 6. The acquisition hole 16a, which is coaxial with the locking hole 3a in which the holder γ is attached, is located on the upper and lower specimen rods.
When the sample vertical bar 19 is raised by the movable means 20, the sample vertical bar 19 reaches the locking hole 3a of the mounting table 3 on which the first sample 6 is attached together with the holder 7, so it is raised a little further. When the holder 7 is slightly lifted, rotated 90 degrees, and then lowered, the holder 7 slips out of the locking hole 3a and descends, and the sample 6 is placed in the receiving hole 16a on the mounting table 16.
I am forced to move every time.

Then, the gate valve 14 is closed again.

After completing the test in this way, sample 6 is immediately placed in the furnace body.
The samples are successively moved into the sample chamber 16, which is isolated from the sample chamber 16.

Incidentally, as described above, the holder 7 holding the sample 6 is placed on the tip of the sample vertical rod 19 and moves between the mounting tables 3 and 16, but the holder 7 itself is quite heavy, and The diameter of both is about 25Φ to 30Φ, and the contact end surface of both is a smooth horizontal surface with no unevenness, so the mounting condition is extremely stable, and the holder 7 will not fall during movement. It will not move out of position.

As explained in detail above, according to the present invention, the mounting table 3 on which a plurality of samples 6 can be placed is supported in the furnace body 1, and the samples are continuously punched from above and below using the upper and lower punch rods 9 and 10. A sample chamber 13 is provided outside the furnace body 1 in which another mounting table 16 is pivotally supported. The upper and lower sample rods 19 are configured to move with the sample 6 placed therein, and the mounting tables 3 and 16 are configured to rotate synchronously at a constant angle, so that a plurality of samples can be tested continuously. In addition to its extremely high thermal efficiency, the test itself can be conducted in a short period of time, and it also prevents the sample from being affected by the high temperature inside the furnace after it has cooled. This effect can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a front view thereof, FIG. 2 is a side view thereof, FIG. 3 is a plan view of the mounting table 3, and FIG.
The figure is a perspective view of the holder. 1... Furnace body, 3, 16... Mounting table, 3a... Locking hole, 3
b, 3b...Insertion groove, 4...Spindle, 6...Sample, 7...
Holder, 7a, 7a... projection, 8, 18... worm gear, 9, 10... upper and lower punch rod, 11... load cell,
12... Cylinder, 13... Sample chamber, 19... Sample upper and lower rods, 20... Drive means, 21... Drive motor, 22...
Worm axis.

Claims (1)

[Claims] 1 A mounting table 3 on which a plurality of samples 6 can be placed is pivoted inside the furnace body 1, and the samples 6 are compressed continuously from above and below with punch rods 9 and 10, and there is no space outside the furnace body 1. A sample chamber 13 in which another mounting table 16 is pivotally supported is provided, and the two are communicated via a gate valve 14.
The upper and lower sample rods 19 are configured to carry the sample 6 and move relative to each other within the furnace body 1, and the mounting tables 3 and 16 are configured to rotate synchronously at a constant angle. , hot pressure tester.