Payvand choki sifatini ikki holatga bo'lish mumkin: payvandlash samaradorligini sinash va payvandlashning kunlik tekshiruvi. Agar yangi o'rnatilgan payvandlash mashinasi, kapital ta'mirdan so'ng payvandlash mashinasi yoki payvandlash jarayoni qat'iy ravishda sozlanishi va baholanishi kerak. Payvandlashning ishlashi sinovlari zarur deb topilsa, payvandni vizual tekshirish kerak, shuningdek, kesish sinovini o'tkazish kerak. To'qimachilikni sinash usuli - belgilangan ishlov berish talablariga muvofiq payvandlashdan keyin payvand chokini tanlash va bo'ylama yo'nalishi bo'yicha valentlik namunasini tayyorlash.
Va namunaning markazidagi payvandning holatiga e'tibor bering, so'ngra kuchlanish sinovini o'tkazish uchun material ishlashi sinov mashinasiga boring. Umuman olganda, payvand choki singan bo'lmasligi kerak, ammo normal tayanch materialda sinadi va kuchlanish qiymati normal chegarada bo'ladi, bu esa payvandning malakali ekanligini anglatadi. Agar sinish payvand chog'ida yuzaga kelsa va belgilangan kesish kuchiga (odatda 250N / mm2 dan ortiq) yetsa, payvand ham malakali hisoblanadi. Ushbu sinovda payvand chayqalish stressiga duchor bo'ladi, shuning uchun u kesish kuchi hisoblanadi
