evo-reflow-handbook-parser

Purpose

Parse the reflow machine handbook PDF and return structured dictionaries of all process thresholds, formulas, and compliance limits.

Key Parameters (from handbook)

Preheat Zone

• Temperature range: 100°C to 150°C
• Max ramp rate: 2°C/second
• Ramp rate equation: ΔT/Δt (temperature change over time change)

TAL (Wetting Time)

• Window: 30 to 60 seconds
• Measured as time solder is above its melting (liquidus) point
• Liquidus is paste-specific (from MES solder_liquidus_c column)

Peak Temperature

• Must exceed liquidus by approximately 20°C
• Required min peak = solder_liquidus_c + 20

Conveyor Speed

• LINE SPEED (MIN) = boards_per_min × board_length_cm / loading_factor
• Actual speed must be >= minimum line speed

Representative Thermocouple

• Handbook says to thermocouple the largest and smallest device
• TC at "largest_mass" location represents the coldest spot (hardest to heat)
• Use largest_mass TC for compliance checks (minimum peak, TAL)

Usage

import sys
sys.path.insert(0, '/app/environment/skills/evo-reflow-handbook-parser/scripts')
from utils import get_all_handbook_params, parse_preheat_params, parse_tal_params

params = get_all_handbook_params()
print(params['preheat']['max_ramp_rate_c_per_s'])  # 2.0