Ahohuru bere mu tuo a ɛrebɔ denneennen ho nhyehyɛe .
Shot blasting ahoɔden (a wɔsan frɛ no shot peening ahoɔden) spring shot blasting denden mfiri yɛ ade titiriw a ɛwɔ soro ayaresa, a ɛwɔ botae sɛ ɛbɛma ɔbrɛ asetra ne adwennwen a ɛyɛ corrosion resistance a spring ahorow no ayɛ kɛse. Ɛnyɛ "nkate" so na ɛba ne nkɛntɛnso so, na mmom wɔhwɛ so na wodi ho adanse denam mfiridwuma ho nsɛnkyerɛnne a ɛyɛ katee na wotumi kyerɛ dodow so.
Wobetumi akyekyɛ spring shot blasting inrderning no mu nsɛnkyerɛnne titiriw no mu akuw atitiriw abiɛsa: nhyehyɛe sohwɛ ho nsɛnkyerɛnne, nea efi mu ba no ho adanse kyerɛ ne adwumayɛ ho guarantee nsɛnkyerɛnne.
I. Process control indicators a ɛkyerɛ sɛnea wɔde tuo bɔ afiri a ɛma ahoɔden (hwɛ ma adeyɛ no mu nsɛm a ɛteɛ) .
Ɛsɛ sɛ wɔhwɛ saa nsɛnkyerɛnnede ahorow yi so na wɔkyerɛw to hɔ wɔ bere ankasa mu wɔ tuo a wɔtow no mu.
Ahoɔden a wɔde tow tuo (Almen ahoɔden) .
Nkyerɛaseɛ: Eyi ne adeyɛ sohwɛ parameter a ɛho hia sen biara. Fa almen sɔhwɛ asinasin a wɔahyɛ da ayɛ (mpɛn pii no Type A anaa Type N) susuw. Siesie sɔhwɛ afã no wɔ beae koro no ara a spring no wɔ no. Bere a wɔanya shot blasting akyi no, test piece no bɛbɔ akɔ shot blasting surface no so. Fa arc height gauge susuw arch no sorokɔ.
Arc height value bere a saturation point no adu (kyerɛ sɛ, bere a shot blasting time no yɛ mmɔho abien no, arc height a ɛkɔ soro no ntra 10%) no yɛ shot blasting intensity. Unit: milimita (mm) anaa inch (inch), sɛ nhwɛso no 0.35mma.
Nteaseɛ: Ahoɔden a ɛba fam dodo, ahoɔden a ɛnnɔɔso tumi; Ahoɔden a ɛboro so betumi asɛe ɔfasu no anaasɛ ɛbɛma nsakrae kɛse aba.
Nsɛm a wɔka kyerɛ .
Nkyerɛaseɛ: Ɔha biara mu nkyekyɛmu a ɛwɔ beaeɛ a ɛwɔ soro abon no mu wɔ ahoɔden akyi kɔ beaeɛ no nyinaa. 100% coverage kyerɛ sɛ asase ani no yɛ pɛpɛɛpɛ na ɛyɛ pɛpɛɛpɛ wɔ abon mu.
Nsɛnkyerɛnneɛ: Spring ahoɔden taa hwehwɛ sɛ wɔde katasoɔ dodoɔ a ɛboro anaa ɛne 200% yɛ pɛ (kyerɛ sɛ, berɛ a ɛhia na ama wɔanya 100% a wɔde bɛkata so no mmɔho mmienu). Eyi yɛ nea wɔde hwɛ hu sɛ wɔbɛsa mmeae nyinaa, titiriw no, wɔasa ntini nketenkete no koraa.
Ɔkwan a wɔfa so yɛ nhwehwɛmu: Fa toto standard spectrum no ho wɔ microscope ase, anaasɛ fa professional image analysis software di dwuma.
Nneɛma a ɛwɔ projectile no mu, ne kɛse ne ne nsusuwii .
Nneɛma: a wɔtaa de di dwuma ne cast steel shot, stainless steel shot ne ceramic shot. Egyina spring material no so (sɛ nhwɛso no, wɔtaa de ceramic balls di dwuma ma high-stress valve springs).
Size: Ɛsɛ sɛ wɔhyɛ so katee. Sɛ nhwɛso no, φ0.3mm, φ0.5mm, ne nea ɛkeka ho no, ɛyɛ ketewa-aduru a ɛyɛ kɛse no betumi ama nhyɛso a ɛwɔ nhyɛso a ɛnyɛ den nanso ɛyɛ den no ayɛ kɛse, na ɛma ɛfata ma nneɛma a ɛyɛ fɛ. Akɛseɛ-asized pellets tumi ma deeper compressive stress layers.
Nsusuwii: Ɛho hia sɛ ɛyɛ kurukuruwa, enni anoano anaa ntwea a ɛyɛ nnam, na biribiara nsɛe. Projectiles a abubu no betumi asɛe spring no ani na ɛsɛ sɛ wɔfa so yiyi mu.
shot blasting bere .
Bere a wɔhwehwɛ sɛ wɔde di dwuma wɔ ahoɔden ne nea wɔde kata so a wɔahyɛ no ase. Ɛsɛ sɛ ɛnam nhyehyɛe mu sɔhwɛ ahorow so na ɛkyerɛ.
ii. Verification indicators of shot blasting afiri a ɛhyɛ den aba (Dect measurement of strengthing effect) .
Ɛsɛ sɛ wɔsusu saa nsɛnkyerɛnneɛ yi wɔ asubura a wɔahyɛ no den anaa ananmusifoɔ nhwɛsoɔ so.
Surface compressive stress ne stress layer no mu dɔ .
Nkyerɛaseɛ: Nhyɛsoɔ a ɛwɔ nhyɛsoɔ a aka no kɛseɛ a ɛnam tuo a wɔtow wɔ adeɛ no ani ne ne nkyekyɛmu so wɔ bun no kwankyerɛ so.
Akwan a wɔfa so susuw nneɛma: x{0}}ray diffraction (XRD), ɔkwan a wɔfa so tu fam, ne nea ɛkeka ho Eyi ne ɔkwan a ɛyɛ tẽẽ ne nyansahu mu nokwaredi a ɛsen biara.
Nsɛnkyerɛnnede .
Maximum compressive stress value: ɛtaa du ne sorokɔ wɔ beae pɔtee bi wɔ soro (te sɛ -800 MPa kosi -1200 MPa).
Compressive stress layer depth: The depth at which the residual compressive stress decays to zero. For high-performance springs, it is required to have a sufficiently deep effective stress layer (for example, >0.1mm).
Nneɛma a ɛwɔ soro a ɛyɛ mmerɛw .
Nkyerɛase: Shot blasting sesa kakra wɔ soro morphology.
Nsɛnkyerɛnne: RA botae (arithmetic mean deviation of contour). RA boɔ no bɛkɔ soro wɔ tuo a wɔtow no akyi, nanso ɛsɛ sɛ wɔhyɛ so wɔ kwan a wɔma ho kwan no mu (sɛ nhwɛso no, RA sua anaasɛ ɛne 3.2 μm yɛ pɛ). Roughness a ɛkɔ soro dodo no betumi abɛyɛ ɔbrɛ fibea foforo na asiw tumi a ɛhyɛ den no ano.
Nneɛma a ɛwɔ soro no mudi mu kura .
Nkyerɛaseɛ: Aniwa anaa afiri a wɔde hwɛ nneɛma nketenkete mu hwɛ sɛ ɔfasuo no nni tuo a ɛpae boro so (ɛde "orange peel" anaa micro-cracks ba), shot embedding, ne corrosion points a ɛnam dadeɛ a ɛyɛ foforɔ a ɛda adi so de ba.
iii. Adwumayɛ ho awerɛhyem ho nsɛnkyerɛnne a ɛkyerɛ sɛnea wɔtow tuo a ɛyɛ den (a etwa to a ɛkyerɛ sɛ ɛyɛ den sɛ ɛbɛhyɛ den) .
Eyi ne shot blasting ahoɔden nhyehyɛe no ho adanse a etwa to.
Ɔbrɛ Asetena mu Nkɔanim a Wɔyɛ .
Nkyerɛaseɛ: Wɔnam ɔbrɛ sɔhwɛ mu aba a ɛfiri asubura no mu ansa na wɔahyɛ no den ne akyi a wɔde bɛto benkyi so ne akyi a wɔde toto ho no so na ɛsɔ hwɛ.
Nsɛnkyerɛnne: Mpɛn pii no, ɛho hia sɛ ɔbrɛ nkwa (nkyinkyin dodow a ɛkɔ mpaapaemu) mu no kɔ soro mpɛn pii anaasɛ mpo ne kɛse anaa nea ɛboro saa. Sɛ nhwɛso no, asubura bi nkwa nna a wɔmfa tuo ntow tuo no yɛ mpɛn 500,000, na ɛho hia sɛ wodu bɛboro mpɛn ɔpepem 2 wɔ tuo a wɔtow no akyi. Eyi ne adwumayɛ metric titiriw a wɔn a wɔde di dwuma no dwen ho kɛse.
Relaxation resistance/tumi a wɔde ko tia adwennwen a ɛma obi ho dwo no .
Nkyerɛaseɛ: tumi a spring bi wɔ sɛ ɛbɛkura ne tumi a ɛyɛ elastic no mu wɔ bere tenten-term loading ase. Shot blasting betumi ama saa adwumayɛ yi atu mpɔn kɛse.
Ɔkwan a wɔfa so sɔ hwɛ: Hwɛ so wɔ bere pɔtee bi mu wɔ ɔhyew ne adesoa pɔtee bi ase, na susuw adesoa no (anaa ɔsorokɔ) a ɛyera no dodow. Ɛsɛ sɛ adehwere dodow a ɛba wɔ tuo a wɔtow no akyi no ba fam koraa sen nea ɛwɔ afã horow a wɔapae a wɔanhyɛ da no mu no.
Ne tiawa mu no, spring shot blasting ahoɔden nyɛ "hit" adeyɛ a ɛyɛ mmerɛw ara kwa, na mmom mfiridwuma nhyehyɛe a ɛyɛ nwonwa a ɛyɛ parameter control a ɛyɛ pɛpɛɛpɛ, nyansahu mu susudua verification ne ɔbrɛ sɔhwɛ a etwa to. Non{1}}Adwumayɛbea anaa ankorankoro a wɔrebɔ mmɔden sɛ wɔbɛtow tuo a wɔde tow tuo wɔ gas cylinders so.