%%{init: {
  "theme": "base",
  "themeVariables": {"fontSize":"30px","fontFamily":"Calibri,Quicksand,sans-serif"},
  "flowchart": {
    "nodeSep":25,
    "rankSep":80
  }
}}%%
flowchart LR
    classDef default fill:#ffffff,stroke:#6699cc,stroke-width:2px,padding:24px;

    A["Raw material"] --> B["Smelt"]
    B --> C["VIM"]
    B --> D["Non-vacuum
smelt"]
    C --> E["Electrode"]
    D --> E
    E --> F["ESR"]
    E --> G["VAR"]
    F --> H["Surface
trimming"]
    G --> F
    H --> I["Ingot"]
    %% ===== 新增锻造主线流程 =====
    I --> J["Heating"]
    J --> K["Forging"]
    K --> L["Rough
machining"]
    L --> M["Heat
treatment"]
    M --> N["NDT(UT/PT)"]
    N --> O["Finishing"]
    O --> P["Final
inspection"]
    P --> Q["Packing
warehousing"]

    linkStyle default stroke:#6699cc,stroke-width:1.5px;