Wɔ nnɛyi mfiridwuma mu nneɛma a wɔyɛ mu, titiriw wɔ nnwuma te sɛ kar, ahunmu, ne ɛlɛtrɔnik mfiri a wɔde yɛ nneɛma pɛpɛɛpɛ mu no,...spot welding afiri a wɔde yɛ nneɛmayɛ adwinnade a ɛho hia a wɔde hwɛ hu sɛ nneɛma no yɛ papa, esiane mfaso a ɛwɔ so wɔ adwumayɛ a ɛkɔ soro, ahoɔden a wɔkora so, ne weld a ɛyɛ den mu nti.
Nanso, mfiri biara a ɛyɛ pɛpɛɛpɛ no yɛ mmerɛw sɛ mfomso bɛba bere a wɔde bere tenten-reyɛ adwuma no. Ɔkwan a wɔfa so siesie ɔhaw ahorow a wɔahyehyɛ no yiye na etu mpɔn a wobenya no yiye no ho hia na ama wɔatumi atew bere a wɔde yɛ adwuma no so na wɔama nneɛma a wɔyɛ no yiye.
Saa asɛm yi de nhwehwɛmu a emu dɔ ma wɔ MFDC spot welder mfomsoɔ nsia a ɛtaa ba no ho, de ɔhaw ano aduru anammɔn a ɛkɔ akyiri, a mfasoɔ wɔ so ne nteɛsoɔ nneyɛeɛ ma de boa adwumayɛfoɔ ne nsiesie mfiridwumayɛfoɔ ma wɔhunu ntɛm na wɔsiesie nsɛm.
I. MFDC Spot Welder Mfomso Ntɛmntɛm Nhwehwɛmu Table
Sɛnea ɛbɛyɛ a ɛbɛyɛ mmerɛw sɛ wobehu ɔhaw ahorow ntɛmntɛm no, yedi kan de nkyerɛkyerɛmu pon a ɛyɛ ntɛm a ɛbɔ mfomso atitiriw, nea ɛtaa de ba, ne ano aduru a wɔkamfo kyerɛ ma.
| Mfomso Adeyɛ | Nneɛma a Ɛtaa De Ba | Ɔhaw a Wodi Ntɛmntɛm ne Nneyɛe a Wɔde Siesie | |
| 1 | Voltage Indicator a ɛnyɛ ne kwan so kanea a Ɛsɔ | Tumi a wɔde ma no ahoɔden a ɛsakrasakra kɛse, abiɛsa-fase a ɛyera, anaasɛ ɛnkari pɛ a emu yɛ den. | Sua abiɛsa-phase voltage na ama woahwɛ ahu sɛ ɛbɛgyina pintinn wɔ 380V ±10% mu. Hwɛ input terminals ne circuit breakers. |
| 2 | Fan a Ɛnkyinkyin / Indicator Light On | Cooling fan asɛe, fan ahoɔden a asɛe, anaasɛ phase a ɛyera wɔ anyinam ahoɔden a wɔde ma mu. | Hwɛ sɛ fan no ayɛ basaa anaasɛ asɛe anaa. Sua fan no ahoɔden a ɛwɔ mu no. Sɛ fan no asɛe a, sesa no ntɛm ara. |
| 3 | Ɔhyew a Ɛnyɛ ne kwan so Kyerɛw Kanea a Ɛhyerɛn | Adwumayɛ a ɛboro so (Duty Cycle boroo), nsu a ɛma onwini a ɛnnɔɔso, anaasɛ IGBT module a ɛyɛ hyew dodo. | Ntɛm ara gyae welding na fa afiri no tu mmirika a ɛnyɛ hwee na ama ayɛ nwini. Hwɛ sɛ nsuo no mu akwansideɛ bi asiw kwan anaa. Sesa welding parameters na ama woahwɛ ahu sɛ wobedi adwuma no ho dwuma. |
| 4 | Abnormal Current Nsɛnkyerɛnne Kanea a Ɛhyerɛn | Ntɛm ara a ɛboro so (short circuit) anaasɛ ɛkɔ so boro so; overcurrent ahobammɔ circuit no yɛ nea ɛyɛ mmerɛw dodo. | Hwɛ sɛ secondary circuit no yɛ short circuits anaa. Sɛ alarm no sɔ bere a ɛnyɛ adwuma a, bɔ mmɔden sɛ wobɛsesa overcurrent protection threshold a ɛwɔ control board no so anaasɛ wobɛsesa board no. |
| 5 | No Display wɔ Startup / No Spark Bere a Welding | Tumi a asɛe, fuse a abɔ, control circuit mfomso (No Display); welding parameters a ɛnteɛ, electrode a asɛe (No Spark). | Hwɛ anyinam ahoɔden nhama, main switch, na fa fuse no a ɛwɔ nkyerɛkyerɛmu koro no ara sesa. Hwɛ sɛ welding mprempren, bere, ne nhyɛso nhyehyɛe ahorow no yɛ nokware. |
| 6 | Weld Spatter a ɛboro so / Adwuma a Ɛhyew | Welding current a ɛkɔ soro dodo, electrode nhyɛso a ɛnnɔɔso, anaasɛ efĩ a ɛwɔ electrode no ani. | Tew welding current no so na ma electrode nhyɛso no nkɔ soro. Siesie anaa siesie electrode no na ama woahwɛ ahu sɛ ɛne adwuma no bedi nkitaho yiye. |
II. Wɔ-Depth Ɔhaw ano aduru ne Nsiesiei ma Mfomso Nsia a Ɛtaa Ba
Mfomso 1: Abnormal Voltage Indicator Light On (Tumi a Wɔde Ma Nhyehyɛe Ho Asɛm) .
Phenomenon Analysis: MFDC spot welders hia ahoɔden a ɛkorɔn-a ɛyɛ papa a wɔde hyɛ mu. Sɛ voltage indicator a ɛnteɛ no hyerɛn a, ɛtaa kyerɛ sɛ input voltage no nni range a wɔma ho kwan no akyi (mpɛn pii no ±10% wɔ 380V a wɔahyɛ no agyirae no mu) anaasɛ three{4}}phase imbalance a emu yɛ den anaasɛ phase loss mpo wɔ hɔ. Three-phase voltage imbalance de current distribution a ɛnyɛ pɛpɛɛpɛ ba tẽẽ wɔ IGBT modules no so, na adwumayɛ a ɛkyɛ wɔ saa tebea horow yi mu no bɛma IGBTs no nkwa nna ayɛ tiaa kɛse.
Ɔhaw Ahorow Ho Anamɔn a Ɛkɔ Akyiri:
1.Visual Inspection: Hwɛ sɛ anyinam ahoɔden nhama asɛe, nkitahodi sɛ looseness, ne titiriw circuit breaker sɛ tripping.
2.Precise Measurement: Fa high-precision multimeter anaa abiɛsa{2}}phase voltmeter susuw phase ne line voltages a ɛwɔ phase abiɛsa (U, V, W) wɔ welder no input terminal.
- Key Data Reference: Mfiridwuma gyinapɛn taa hwehwɛ sɛ abiɛsa{0}}phase voltage deviation no ntra ±5%, na nea ɛboro so ±10%.
3.Phase Loss Determination: Sɛ phase voltage biako yɛ zero anaasɛ ɛba fam kɛse a, si so dua sɛ phase ayera.
4.Nneyɛe a wɔde teɛteɛ nneɛma:
- Sɛ voltage nsakraeɛ yɛ grid asɛm a, wɔkamfo kyerɛ sɛ fa industrial-grade voltage stabilizer anaa power quality optimizer si welder no atifi.
- Sɛ wohu sɛ phase ayera a, hwɛ fuses, mframa switches, ne wiring terminals nyinaa wɔ distribution box no mu na ama woahwɛ ahu sɛ wotumi de ho to so sɛ wo ne no di nkitaho.
Mfomso 2: Fan a Ɛnkyinkyin / Indicator Light On (Primary Cooling System Failure) .
Phenomenon Analysis: core power components a ɛwɔ MFDC spot welder no mu, te sɛ IGBT modules ne main transformer no, ma ɔhyew kɛse ba bere a ɛreyɛ adwuma no. Fan no ho hia kɛse ma mframa a wɔhyɛ ma ɛma onwini no; sɛ egyae adwumayɛ a, ɔhyew no ntumi nsɛe wɔ bere mu, na ɛde emu hyew kɔ soro ntɛmntɛm na ɛkanyan ɔhyew a ɛboro-ho banbɔ no.
Ɔhaw Ahorow Ho Anamɔn a Ɛkɔ Akyiri:
1.External Check: Ntɛm ara bue afiri no casing na hwɛ sɛ fan blades no ayɛ jammed denam mfutuma, ahɔho nneɛma, anaasɛ asɛe.
2.Power Check: Sua fan no supply voltage (mpɛn pii no 24V DC anaa 220V AC). Sɛ voltage biara nni hɔ a, mfomso no da fan control circuit board anaa power module no so.
3.Fan Unit Check: Sɛ supply voltage no yɛ normal nanso fan no ntumi nkɔ a, fan unit no ankasa asɛe na ɛsɛ sɛ wɔsesa.
4.Nneyɛe a wɔde teɛteɛ nneɛma:
- Ntɛm ara fa fan no a ɛwɔ nkyerɛkyerɛmu ne mframa a ɛkɔ mu no ara mu biako si ananmu.
- Daa (wɔkamfo kyerɛ bosome mmiɛnsa biara) fa mframa tuo a nhyɛsoɔ kɛseɛ -hohoro mfuturo a ɛfiri casing no mu, ɔhyew afiri, ne fan blades mu na ama woahwɛ ahu sɛ onwini akwan a biribiara nsiw ano.
Mfomso 3: Ɔhyew a Ɛkyerɛ Ɔhyew a Ɛnyɛ ne kwan so Kanea a Ɛsɔ (Ɔhyew a Ɛboro So Ahobammɔ) .
Phenomenon Analysis: Eyi ne mfomso a ɛtaa ba wɔ ahobammɔ a wɔde to mu. Ɛkyerɛ sɛ IGBT module anaa transformer no hyew adu anaa ɛboro nea wɔahyɛ ato hɔ a ɛboro-temperature protection threshold no so. Mpɛn pii no, eyi fi adwumayɛ a ɛboro so anaasɛ onwini nhyehyɛe a ɛnyɛ adwuma yiye.
Data Titiriw ne Ɔhaw Ho Anamɔn a Wɔbɛyɛ:
1.IGBT Temperature Limit: Junction Temperature anohyeto ma IGBTs taa yɛ 125℃. Mpɛn pii no, welder no ahobammɔ circuit no kanyan alarm bere a ɔhyew no du digrii 80 kosi digrii 90 de bɔ nneɛma atitiriw no ho ban .
2.Duty Cycle: MFDC spot welders wɔ katee adwuma kyinhyia ahwehwɛde. Sɛ nhwɛso no, welder a ne rated duty cycle yɛ 20% kyerɛ sɛ welding bere a ɛsen biara no ntumi ntra sikani 2 wɔ 10-second adwumayɛ kyinhyia mu.
3.Nsuo a Ɛma Nwini Hwɛ (Nsuo-Nsuo a Ɛyɛ Nwini Nhwɛsoɔ):
- Hwɛ nsuo a ɛwɔ ahina no mu no dodoɔ na hwɛ sɛ nsuo pɔmpɛ no reyɛ adwuma yie.
- Susu sɛnea nsu a ɛyɛ nwini no sen ne ne hyew. Nsu a ɛsen sɛnea ɛsɛ anaasɛ nsu no hyew a ɛkɔ soro dodo (a wɔtaa hwehwɛ sɛ ɛba fam sen digrii 30 ) bɛma ɔhyew no ankɔ yiye.
- Hwɛ nsuo no mu sɛ ebia nsuo no asiw anaasɛ ɛretu, titire wɔ nsuo nhama a ɛwɔ electrode nsa ne transformer no mu no mu.
4.Nneyɛe a wɔde teɛteɛ nneɛma:
- Shutdown and Cooling: Gyae welding ntɛm ara na ma mfiri no nkɔ so nyɛ adwuma (ma fan ne nsu pɔmpɛ no nkɔ so nyɛ adwuma) kosi sɛ ɔhyew no bɛkɔ fam asen digrii 50 ansa na woabɔ mmɔden sɛ wobɛsan afi ase bio.
- Parameter Adjustment: Hwɛ welding nhyehyɛe no parameters no mu hwɛ hu sɛ adwuma no ntra so. Sɛ ɛho hia sɛ wɔyɛ welding a ɛyɛ den-a, ɛsɛ sɛ wɔde tumi a ɛkorɔn-rated di dwuma.
Mfomso 4: Abnormal Current Indicator Kanea a Ɛsɔ (Ahobammɔ a Ɛboro So) .
Phenomenon Analysis: Abnormal current (overcurrent) ahobanbɔ ne welder no mmuae ntɛmntɛm wɔ short circuit wɔ secondary circuit anaasɛ power component huammɔdi ho. MFDC welders taa de LEM current sensors di dwuma de hwɛ current no wɔ real-bere mu. Sɛ current no boro bo a wɔahyɛ no so pɛ a, ahobammɔ circuit no to IGBT no mu wɔ milisecond mu.
Ɔhaw Ahorow Ho Anamɔn a Ɛkɔ Akyiri:
1.Nsonsonoe a ɛda Idle vs. Load Alarm ntam:
- Idle Alarm: Sɛ alarm no kanyan bere a ɛnyɛ welding a, ebetumi aba sɛ efi overcurrent ahobammɔ circuit a ɛyɛ mmerɛw dodo (ɛhwehwɛ sɛ wɔyɛ threshold nsakrae) anaa IGBT module a asɛe (sɛ nhwɛso no, short-circuited breakdown).
- Load Alarm: Sɛ alarm no kanyan bere a welding fi ase a, di kan hwɛ secondary circuit (electrodes, electrode arms, secondary cables) no sɛ circuit tiawa anaasɛ contact a enye a ɛde current surge ba ntɛm ara anaa.
2.IGBT / Titiriw Transformer Nhwehwɛmu:
- Fa multimeter diode mode susuw resistance a ɛda IGBT module no terminals ntam de hwɛ sɛ asɛe anaa.
- Hwɛ transformer titiriw no mu hwɛ hua biara a ɛrehyew anaasɛ ɔhyew agyiraehyɛde biara.
3.Nneyɛe a wɔde siesie:
- Sɛ wɔsi IGBT asɛeɛ no so dua a, ɛsɛ sɛ wɔsesa IGBT module ahodoɔ a ɛwɔ bridge arm korɔ no ara so no nyinaa, na ɛsɛ sɛ wɔhwɛ drive circuit no mu na amma module foforɔ no anni huammɔ ntɛm ara.
- Sɛ ɛyɛ circuit tiawa a ɛto so abien a, tew dade a asɛe fi electrode nsa no mu anaasɛ sesa insulating pads.
Mfomso 5: Ɛnyɛ Display wɔ Startup anaasɛ Spark biara nni hɔ Bere a Welding (Power ne Control Circuit Mfomso) .
Phenomenon Analysis: Eyinom yɛ mfomso ahorow a ɛba wɔ mmere ahorow abien mu. Display biara nni hɔ a ɛkyerɛ sɛ power input anaasɛ control circuit mfomso bi aba; no spark kyerɛ mfomso bi wɔ welding output circuit no mu.
Ɔhaw Ahorow Ho Anamɔn a Ɛkɔ Akyiri:
| Mfomso Type | Ɔhaw Ho Ahosiesie Focus | Nsɛntitiriw a Wɔde Hwɛ Nneɛma So |
| No Display wɔ Startup so | Tumi a Wɔde Hyehyɛ ne Tumi a Wɔde Di Dwuma |
1. Hwɛ sɛ power cable ne main switch no abɔ mu anaa. 2. Hwɛ sɛ control circuit fuse no abɔ anaa; ɛsɛ sɛ replacement de nkyerɛkyerɛmu koro no ara di dwuma. 3. Hwɛ sɛ control transformer no wɔ output anaa. |
| No Spark Bere a Wɔreyɛ Welding | Welding Parameters ne Output Kwansin |
1. Welding Parameters: Hwɛ sɛ welding current, bere, ne pressure nhyehyɛe no yɛ zero anaasɛ ɛba fam dodo. 2. Electrode Tebea: Hwɛ sɛ electrode no asɛe kɛse anaasɛ ayɛ oxidized, na ɛde contact resistance a ɛboro so ba. 3. Switch Status: Hwɛ sɛ nan pedal anaa pneumatic switch no reyɛ trigger yiye na sɛ control system no de output signal remena anaa. |
Nneyɛe a Wɔde Teɛ Nneɛma:
- Wɔ "No Display" asɛm no ho no, ɛsɛ sɛ fuse no a wobɛsesa anaasɛ wobɛsiesie control power supply no siesie ɔhaw no.
- Wɔ "No Spark" asɛm no ho no, nhyehyɛe a wɔde hwɛ welding nhyehyɛe no parameters ho hia . Sɛ nhwɛso no, sɛ wɔde dade a ɛyɛ tratraa yɛ welding a, ebia bere a wɔde yɛ welding no behia sikani 0.05 kosi 0.1 pɛ; biribiara a ɛtwetwe adwene ketewaa bi betumi ama welding no adi huammɔ.
Mfomso 6: Weld Spatter a ɛboro so anaasɛ Adwumayɛbea a Ɛhyew (Weld Quality Issue) .
Phenomenon Analysis: Spatter ne scorching yɛ nsɛm a ɛtaa ba a ɛnyɛ weld quality a ɛka product ahoɔden ne ne hwɛbea tẽẽ. Mpɛn pii no, eyi fi welding parameters a ɛnhyia, electrode tebea a enye, anaasɛ adwumayɛbea no ani ahosiesie a ɛnsɛ.
Ɔhaw Ahorow Ho Anamɔn a Ɛkɔ Akyiri:
1.Welding Parameter Nhwehwɛmu:
- Mprempren: So wɔde welding mprempren no asi hɔ kɛse dodo? Nsu a ɛdɔɔso dodo ma ɔhyew pii ba ntɛm ara, na ɛma dade no nwene denneennen na ɛpetepete.
- Nhyɛso: So wɔde electrode nhyɛso no asi hɔ a ɛba fam dodo? Nhyɛso a ɛnnɔɔso ma sɛnea ɛko tia nkitahodi no yɛ kɛse na entumi nsiw nugget a ayɛ hyew no ano yiye, na ɛno nso de petepete ba.
- Bere: So bere a wɔde yɛ welding no ware dodo? Bere a ɛboro so ma ɔhyew a ɛboaboa ano dodo ba, na ɛde ɔhyew-fa adwuma no mu anaasɛ ɛhyew.
2.Electrode Tebea Hwɛ:
- Hwɛ sɛ electrode no ano ayɛ oxidized kɛse, asɛe, anaasɛ nneɛma a asɛe ayɛ mu fĩ anaa. Efĩ a ɛwɔ electrode no ani no ma nkitahodi a ɛko tia no yɛ kɛse, na ɛde ɔhyew a ɛboro so wɔ mpɔtam hɔ ne petepete ba.
- Hwɛ sɛ electrode nsa no yɛ pɛpɛɛpɛ anaa na ama woahwɛ ahu sɛ wɔde nhyɛso no ayɛ pɛ.
3.Workpiece Check: Hwɛ adwumayɛbea no ani sɛ ngo, rust, anaa oxide layers. Saa nneɛma yi sɛe weld su kɛse.
Nneyɛe a Wɔde Teɛ Nneɛma:
- Parameter Optimization: Di nnyinasosɛm a ɛne sɛ "di kan de nhyɛso di dwuma, afei ma ahoɔden" akyi. Wɔhyɛ nyansa sɛ wobɛtew mprempren no so sɛnea ɛfata, ama nhyɛso no akɔ soro, na wode multi-pulse welding (pre-heat - weld - temper) mode bedi dwuma de asi nugget a wɔabɔ no yiye.
- Electrode Siesie: Fa electrode dresser di dwuma daa na ama electrode no ano ayɛ nea ɛho tew na ɛyɛ pɛpɛɛpɛ.
- Adwumayɛbea a Wɔhohoro: Ɛsɛ sɛ wɔhohoro adwuma no ani a ɛho hia ansa na wɔayɛ welding.
III. Ɔkwan a Wɔfa so Siesie Ɔhaw Ho Nhyehyɛe ne Nsiesiei Ho Nyansahyɛ ahorow
Sɛnea ɛbɛyɛ a MFDC spot welder no bɛyɛ adwuma a ɛyɛ den no, ɛsɛ sɛ adwumayɛfo a wɔhwɛ so no di ɔhaw ahorow ho nhyehyɛe a wɔayɛ no nhyehyɛe ne "prevention first" nsiesie nyansapɛ so.
1. Mmiɛnsa-Anamɔn Ɔhaw Ho Nsiesiei Ɔkwan
Wɔhyɛ nyansa sɛ fa "Aniwa Nhwehwɛmu-Tumi Nhwehwɛmu-Osuahu Ɔkwan" di dwuma de siesie ɔhaw ahorow:
1.Aniwa so Nhwehwɛmu:
- Hwɛ: Hwɛ sɛnea akanea a ɛkyerɛ sɛnea nneɛma te, nhama a ɛka bom, electrode no asɛe, na hwɛ sɛnea nsu no mu nsu no retu anaa.
- Tie: Tie nnyigyei biara a ɛnyɛ ne kwan so bere a mfiri no reyɛ adwuma (sɛ nhwɛso no, fan dede, transformer humming).
- Hua: Hwɛ sɛ hua biara a wɔahyew anaasɛ nneɛma a wɔahyew a wɔde siw mframa ano no hua bi wɔ hɔ anaa.
2.Tumi Nhwehwɛmu:
- Fa adwumayɛfoɔ nnwinnadeɛ susuw ahoɔden, mprempren, ne frequency a ɛwɔ input power supply no mu, hwɛ hu sɛ three-phase balance na ɛdi nnwinnadeɛ ahwehwɛdeɛ so.
- Hwɛ sɛnea control power ne drive power outputs no gyina pintinn.
3.Osuahu & Nwoma:
- Hwɛ nea ɔyɛɛ no mfomso koodu pon ne ɔmansin mfonini ahorow no so na tew mfomso dodow no so ntɛmntɛm a egyina alarm koodu no so.
- Hwɛ mfiri no nnansa yi nsiesie ho kyerɛwtohɔ ne dwumadie ho kyerɛwtohɔ mu na hwɛ sɛ mfomsoɔ no fa parameter nsakraeɛ anaa nsiesie adwuma a wɔayɛ nnansa yi ho anaa.
2. Nkamfo a Wɔde Siw Nsiesiei a Wɔde Siw Ano
MFDC spot welder dwumadie a ɛyɛ pintinn no gyina nsiesie a wɔyɛ no daa so 70%. Sɛ wɔde nhyehyɛe a emu yɛ den a wɔde hwɛ nneɛma mu da biara da besi hɔ a, ebetumi atew huammɔdi dodow so kɛse.
| Ade a Wɔde Siesie Nsiesiei | Mpɛn dodoɔ | Dwumadi Titiriw ne Botae | |
|
Ahotew ne Mfutuma a Woyi Fi Hɔ |
Dapɛn biara/Ɔsram biara | Fa mframa a wɔahyɛ no den a ngo- nni mu di dwuma de tew casing no mu, ɔhyew afiri, ne fan ahorow ho na amma mfutuma a ɛbɛboaboa ano no annya ɔhyew a ɛkɔ ne nea wɔde siw ano no so nkɛntɛnso. | |
| Nsuo Kwansin Nhwehwɛmu | Da biara | Hwɛ nsuo a ɛma onwini a ɛwɔ ahina no mu no dodoɔ ne ne hyeɛ, hwɛ sɛ nsuo a ɛsen mita no kyerɛ sɛ ɛyɛ adwuma sɛdeɛ ɛteɛ. Fa nsu a wɔatew ho anaasɛ ion nnim si ananmu daa na amma nsenia a ɛbɛboaboa ano na asiw ano. | |
| Electrode a Wɔhwɛ So | Wɔ Shift biara mu | Fa electrode dresser di dwuma na ama electrode no akɔ so ayɛ tratraa na ɛho tew. Hwɛ sɛnea electrode nhyɛso no yɛ pɛpɛɛpɛ. | |
| Ɛlektrik Nkitahodi Hwɛ | Afe nkyem abiɛsa biara | Hwɛ high-current connection terminals nyinaa (sɛ nhwɛso no, secondary cables, electrode arm connections) sɛ ɛyɛ den anaa na wɔasiw contact resistance a ɛkorɔn ano, a ɛde ɔhyew ne ahoɔden a ɛyera ba. | |
| Parameter Calibration a Wɔde Di Dwuma | Semi-Afe biara | Calibrate control parameters te sɛ welding current, bere, ne pressure de hwɛ hu sɛ wɔn pɛpɛɛpɛyɛ di nhyehyɛe ahwehwɛde ahorow ho dwuma. |
Awie
NoMFDC spot welder a ɛwɔ hɔyɛ adwinnade a ɛyɛ pɛpɛɛpɛ a ɛkorɔn, ɛyɛ adwuma yiye-a ɛyɛ adwuma yiye, na ne haw ano aduru hwehwɛ sɛ wɔyɛ nhyehyɛe ne nimdeɛ titiriw.
Ɛdenam akwan asia a wɔtaa fa so hwehwɛ mfomso a wɔde ama wɔ asɛm yi mu no yiye na wodi nnyinasosɛm a ɛne "siw ano a edi kan, nea ɛto so abien siesie" no so denneennen so no, nnwumakuw betumi atew bere a nnwinnade no gyae adwuma no so kɛse, ahwɛ ahu sɛ weld no yɛ nea ɛyɛ den, na wɔakɔ so ayɛ nneɛma a etu mpɔn. Wɔhyɛ nyansa sɛ wɔn a wɔyɛ adwuma ne adwumayɛfo a wosiesie nneɛma nyinaa mfa akwankyerɛ yi nni dwuma sɛ ade titiriw a wɔde bɛkyerɛ wɔn da biara da adwuma.
