diff --git a/Cad/HalfSectionDrawer.cs b/Cad/HalfSectionDrawer.cs
index 87fe815..23abc82 100644
--- a/Cad/HalfSectionDrawer.cs
+++ b/Cad/HalfSectionDrawer.cs
@@ -177,9 +177,11 @@ namespace CadParamPluging.Cad
                         tr.AddNewlyCreatedDBObject(hatch, true);
 
                         hatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31");
-                        hatch.PatternScale = 5.0;
-                        hatch.Associative = true;
-                        hatch.ColorIndex = 4;
+                        hatch.PatternScale = 0.8;
+                        hatch.PatternAngle = 0;
+                        hatch.Associative = false;
+                        hatch.ColorIndex = 7;  // 白色
+                        hatch.LineWeight = LineWeight.LineWeight025;  // 0.25mm线宽
 
                         var ids = new ObjectIdCollection();
                         ids.Add(polyPart.ObjectId);