Isn't it weak when the threads are ceramic

There is an impression to be fragile generally when called ceramics but the alumina used for the insert has a high purity therefore the strength becomes high. The ceramic is also manufactured with strict quality control. The compression strength is about 100 times concrete (Based on data by the Tokyo electric power corporation in January, 99 ).


Isn't it weak against impact power

In case of metallically, when power from impact and so on is gained, it destroys the ductility, whereas ceramics there is no ductility and fragility destruction. This is the characteristic that the ceramics are fatal but to unite with concrete in case of the insert because it lays underground and is used for concrete, there is not anxiety for the fragility destruction at all.


Does the strength decline really and doesn't the alumina system ceramics corrode

Have stuck respectively the test fragment which created the raw materials to be using for the insert by the same manufacturing method into the chlorination sodium solution of 5 wt%, water oxidation sodium solution (PH=13) in preserving for 1000 hours and it did the experiment which compared the bend strength of the place around preserving. It is confirming that there are few strength declines.


Aren't the ceramics expensive

There is an image, to be expensive, in the ceramics generally. It is caused by the thing that the ceramics is very stiff. Because it is hard, to process to the product shape, Shaving must be processed with diamond. However, there is a device in the way of manufacturing and ceramic insert becomes a product almost in the processing less. Therefore, ceramic insert realized the price of the metallic system anchor and the following with equality.


Is the removal of the fixing jig troublesome

A lot of desires to want to have priority over work-ability if anything which may leave jig, too, were heard, it prepared the sleeve type which was as it left jig and omitted a removal process, too. It thinks that the work-ability improves if it does this method.


Concrete doesn't flow into the insert? Do the insert and the fixing jig become a protest form but doesn't loosen

It is made by us is measure finish so as not for such trouble to occur. The example of actual concrete preserving is nil. Of the loosening of the government tool because, also, it is not anxiously because it delivers in the condition which forced a main body and a jig.


Is it possible to use the fixing jig many times and to order independntly? The easy of removing

Depending on the customer, there is a case to be using repeatedly a maximum of three times, too. It is possible to sell only the main body of the insert, too, of course. It installs exclusive use jig in the electric drill and it is possible to remove within 1-2 seconds.


Concrete doesn't flows into the insert from among of the formwork and the fixing jig

Pay attention to the shape on the government tool side of the jig. There is small prominence (R=0.3mm) not to be surface and to make surface pressure high. The anxiety isn't necessary.


What material bolt to use with the ceramic insert

Because it is recommending the use for the place where to be corrosion-resistant is looked for, SUS is general. The replacement is easy even if the bolt corrodes but when insert is corroded, easily, the replacement is impossible. Also, because it is inspecting all about the screw mountain, the defect in building doesn't occur.


Won't the insert rotate

We have manufactured a groove in the insert that will prevent it from rotating.

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