A customer recently shared this photo with us — an R32-43mm thread button bit after completing a round of blast hole drilling on a tunnel project through hard granite. We thought it was worth showing, because the condition of a used bit tells you...
Nos Contace
A customer recently shared this photo with us — an R32-43mm thread button bit after finishing a round of blast hole drilling on a tunnel project through hard granite. We thought it was worth showing, because the condition of a used bit tells you more than any spec sheet ever could.
KAIQIU R32-43mm Thread Button Bit after drilling in granite
The Job
Tunnel face drilling in granite. If you have worked in underground excavation, you know what that means. Granite chews through ordinary bits fast — high compressive strength, heavy on quartz, and it does not forgive weak carbide or poor heat treatment. Blast holes need to go in clean and straight, shift after shift.
The contractor was using our R32-43mm bits on a standard top hammer rig with the usual water flushing setup. Nothing special about the rig or the parameters — just a tough rock and a bit that needed to hold up.
What the Bit Looks Like Now
Take a close look at the photo:
Omnes butones adhuc ibi sunt. Nullus fractus aut crepatus est. In granito, hoc non est certum.
Usura aequalis est in facie. Nullae sulci singulares, nulla pars cito deterior fit quam altera. Id significat butones recte positos fuisse et onus aequabiliter distributum.
Corpus bene sustinuit. Notantur quidem vestigia ex fluxu sectionis, sed nullus ablatio profunda nec erosio. Filamenta etiam bene servant — nulla deformatio ex ictu.
Foramina lavationis adhuc aperta sunt. Nullum obstaculum, quod magis valet quam multi putant. Foramen obstructum ad refrigerationem inaequalem ducit et ad praecocem butonum defectum.
Ferramentum adhuc utile est. Hoc opus plus metrorum effecit quam in ratione posuerant, et ratio penetrationis constans mansit usque ad finem.
Cur Successerit
Nulla arcanum hic est. Paucula quae aliter facimus:
Gradus carbidi ad duram petram adaptatur — non gradus universalis qui 'satis bonus est ad omnia.' Tractatio calorifica corporis ita temperatur ut ferrum durum maneat sine fragilitate.
Sistemu R32 ipse etiam adiuvat. Est profilius filetum probatum pro foraminibus subterraneis — bona transmissio energiae, connexio fidabilis, et baculi facile inveniuntur ubique.
Quod Dixerunt Clientes
Supervisor loci nobis dixit: "Paucas marcas in hac facie granitica iam temptavimus. Haec diutius duraverunt et butones non fracti sunt — hoc erat praecipuum pro nobis. Vestrarum manemus."
Hoc est genus commentarii pro quo laboramus. Nullae affirmationes magnae, sed tantum ferramenta quae opus faciunt et diuturna sunt.
Pro Vestrō Praejectō
Nos fabricamus ferramenta R32 a 43 mm usque ad 76 mm, simul cum baculis, connexis et caudis congruentibus. Si in terra dura aut abrasiva perfoditis et pretium per metrum minuere vultis, libenter cum vobis de his quae ad vestras condiciones optima sunt colloquemur.
Taizhou kaiqiu perforatione ferramentis co., ltd.
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